uncategorized 5 min
Email deliverability rules that every organization should know about
DMARC Report Email deliverability rules that every organization should know about Play Episode Pause Episode Mute/Unmute Episode Rewind 10 Seconds 1x Fast.
Tag
SPF
429 articles from DMARC Report.
uncategorized 15 min
Best DMARC Monitoring Tools for Multi-Domain Enterprises in 2026
Quick answer: The best DMARC tools for multi-domain enterprises in 2026 are DMARC Report (enterprise compliance with SLAs, DPAs, SOC-2 Type II.
uncategorized 12 min
Best Email Authentication Platforms for PCI DSS v4.0 Compliance in 2026
Quick answer: PCI DSS v4.0 Requirement 5.4.
uncategorized 8 min
Recipient Address Rejected: Access Denied – Fix SMTP 550 5.7.1 Errors
When you get a 550 5.7.1 non-delivery report, the mail system is saying “recipient address rejected” or “access denied” because the receiving server enforc
uncategorized 20 min
The State of DMARC Adoption in 2026:938,000 Domains Have DMARC Records—But Only 9% Are Actually Protected
Here is a number that should alarm every IT leader, business owner, and security professional reading this: in 2025.
uncategorized 5 min
How To Set Up SPF, DKIM, And DMARC For Your Domain?
DMARC Report How To Set Up SPF, DKIM, And DMARC For Your Domain?
foundational 15 min
DMARC for Gmail and Google Workspace: The Complete Guide
Complete guide to configuring DMARC, SPF, and DKIM for Gmail and Google Workspace. Covers Google's sender requirements, admin console setup, troubleshooting, and ongoing monitoring.
foundational 14 min
DMARC for Office 365: The Complete Guide to Microsoft 365 Email Authentication
Complete guide to configuring DMARC, SPF, and DKIM for Microsoft 365 (Office 365). Covers Microsoft's enforcement rules, Exchange Online setup, troubleshooting, and ongoing monitoring.
foundational 16 min
DMARC Policy Guide: The Complete Journey from None to Quarantine to Reject
The complete guide to DMARC policy progression. Covers p=none monitoring, p=quarantine enforcement, and p=reject full protection, with timelines, decision criteria, and common mistakes at each stage.
foundational 14 min
DMARC Setup Complete Guide: From Zero to Full Protection
The definitive guide to setting up DMARC from scratch. Covers DNS record creation, SPF and DKIM prerequisites, policy progression from p=none to p=reject, and ongoing monitoring with DMARC Report.
uncategorized 6 min
Sending Secure And Encrypted Emails In Outlook: Here’s What It Takes
DMARC Report Sending Secure And Encrypted Emails In Outlook: Here’s What It Takes Play Episode Pause Episode Mute/Unmute Episode Rewind 10 Seconds 1x Fast.
uncategorized 12 min
How To Interpret DMARC Alignment Results In Aggregate And Forensic Reports?
To interpret DMARC alignment results in aggregate and forensic reports.
uncategorized 5 min
$20M Phishing Bust, Pension Scam Alert, Booking Data Breach
A phishing ring behind a $20M fraud operation has been busted. Plus, pension scam alerts and a major Booking.com data breach affecting customer records.
uncategorized 20 min
DMARC Report Analyzers in 2026: Why They Matter More Than Ever, What the Data Really Says, and How to Take Action Today
A data-driven guide backed by 37 primary-source statistics from government PDFs, academic research, industry reports, and official standards bodies.
uncategorized 7 min
Which Type Of DNS Record Identifies An Email Server? A Simple Guide
In the Domain Name System (DNS), the DNS record that identifies an email server for a domain is the MX record - short for mail exchange record.
advanced 8 min
DMARC Enforcement Timeline: Realistic Roadmap from p=none to p=reject
A realistic DMARC enforcement timeline showing how to move from p=none to p=reject. Covers each phase, minimum timelines, common mistakes, and how monitoring dashboards track readiness.
intermediate 10 min
How Can I Troubleshoot Gmail Bounce Messages That Mention DMARC Failures?
Fix Gmail 550 5.7.26 DMARC bounces by checking SPF/DKIM alignment and DNS records. 71% of bounces trace to SPF lookup overflows, fixable in 48 hours.
intermediate 11 min
What Are the Best Features to Look for When Choosing a DMARC Report Analyzer?
The 10 essential DMARC analyzer features -- from scalable RUA/RUF ingestion to automated policy rollout -- that cut spoofing 87% and reach p=reject in 45 days.
foundational 8 min
What Is a DNS Server and How Does It Work as Your Internet Gateway?
A DNS server translates domain names to IP addresses in milliseconds. Learn how recursive and authoritative DNS work, plus DNSSEC, DoH, and troubleshooting.
foundational 10 min
What privacy and data retention concerns should I consider with a DMARC analyzer?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
How To Use Ipconfig /Flushdns To Flush Dns On Windows, Mac, Linux & Browsers
Flushing your DNS cache is one of the quickest ways to fix common internet issues like outdated website data, connection errors, or incorrect IP resolution.
foundational 6 min
How To Identify A Fake Email: Red Flags To Watch Out For
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 8 min
How can I perform a DMARC lookup to check my domain's email authentication status?
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
Steakhouse Financial Attacked, Indian Infrastructure Targeted, MEA Shipment Scams
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 10 min
What are the best practices to follow when generating a DMARC record for a high-volume mailer?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
What Is Baiting in Cybersecurity? Techniques, Real Examples, and Protection Strategies
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
Why DMARC Is Necessary For Enterprises
As of 2025, DMARC is mandatory under multiple compliance frameworks. CISA BOD 18-01 requires p=reject for US federal domains. PCI DSS v4.
foundational 4 min
Ohio Staff Phished, Cybercrooks Mimic FBI, Regulator Attacked Millions
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
What Is a DNS A Record and How to Add One (Complete Guide by DMARCReport)
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 9 min
Is Gmail HIPAA-compliant?
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 10 min
What are the risks of implementing strict DMARC alignment too quickly?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
What Is ARP Spoofing and How to Prevent It
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 4 min
Shadow IT in the Hybrid Workplace: Hidden Risks Beyond Email
Work looks different now, doesn’t it? Employees are the reason. Recent research from Gallup shows that six in ten employees prefer a hybrid work arrangement.
foundational 10 min
What are the best tools for checking DMARC alignment across multiple domains?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 9 min
What are the common signs that a DMARC analyzer could resolve my email spoofing problems?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
What Is Angler Phishing And How Can You Avoid It?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 5 min
Why do you need to receive DMARC emails?
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
How to set up DKIM in Google Workspace: A guide
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 6 min
What Is a Zero-Day Exploit and How Can You Prevent It?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 7 min
What Is a Trojan and How Does It Work?
A Cybersecurity Guide by DMARCReport The shift to mandatory email authentication in 2024-2025 was the biggest change in email security in a decade.
foundational 7 min
What Is a Password Attack in Cyber Security?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 7 min
What Is a DMARC Failure Report? A Complete Guide by DMARCReport
DMARC failure means an email from your domain failed both SPF alignment and DKIM alignment checks.
foundational 4 min
ChatGPT Gemini Users, Optimizely Vishing Breach, Telecom AI Protection
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 6 min
Phishing in 2025: A DMARCReport Perspective on Trends, Risks, and Defense
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 8 min
What are the most common reasons a DMARC DNS record fails to be recognized by receivers?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
Fake Google Security, Beware Qatar Scams, AI Targets LinkedIn
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 10 min
Beyond SPF and DKIM: Why a DMARC Check Matters More Than Ever
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
No SPF Record Found - What It Means, Why It Matters & How to Fix It
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 6 min
What Is DMARC Alignment, And How Does It Work
DMARC alignment means the domain in the From header must match the domain that passed SPF or DKIM authentication.
foundational 11 min
How a DMARC Record Stops Phishing and Domain Abuse
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
Understanding URL Manipulation & URL Rewriting – A DMARCReport Guide
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Uniswap Scam Ads, Meta Ads Malicious, ATM Jackpotting Surge
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 10 min
DMARC Report Monitoring Made Simple for Growing Businesses
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
What Is an SOA Record in DNS? A Complete Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 8 min
550 From Address Violates UsernameCaseMapped Policy: What It Really Means (And How to Fix It Fast)
Compliance is driving a lot of the DMARC adoption we see, says Vasile Diaconu, Operations Lead at DuoCircle. PCI DSS v4.
foundational 9 min
Why should organizations consider deploying a DMARC analyzer before enforcing a DMARC policy?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
How to Fix Gmail DMARC Errors and Improve Email Authentication
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 10 min
How to Safeguard Your Domain Reputation Using DMARC Authentication
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
CSA Cyber Essentials Mark Now Requires DMARC: A Complete Guide
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
How to Check a Link for Phishing - by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
Scan Carefully First, Education Under Threat, AI Phishing Surge
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 11 min
Which reporting formats and tools are best for analyzing DMARC alignment reports?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
Understanding the Top 8 Most Common DNS Record Types - A Comprehensive Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
What does an 'invalid DKIM signature' result mean when shown by a checker?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 11 min
Why are DKIM keys important for email deliverability and anti-spoofing?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 4 min
Commission MDM Breach, Singapore Cyber Alliance, Senegal DAF Breach
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 10 min
When should I implement DKIM if I already have SPF and DMARC configured?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 6 min
Tools Used During a DDoS Attack - A Comprehensive Guide
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
The History of Email: From ARPANET to Modern Secure Communication
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 10 min
How does DKIM verification differ from SPF and DMARC in protecting email?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
What is the difference between a DKIM selector and a domain when checking DKIM?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 10 min
Which DNS providers make it easiest to add a DMARC record?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
PDF Dropbox Phishing, ShinyHunters MFA Bypass, Signal Journalist Targeting
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
Mastering Mailchimp Email Authentication: A Complete Step-by-Step Guide
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 6 min
Email guidelines and requirements for e-commerce platforms
The shift to mandatory email authentication in 2024-2025 was the biggest change in email security in a decade, says Brad Slavin, General Manager of DuoCircle.
foundational 11 min
What are common issues revealed by DMARC aggregate reports and how should I prioritize them?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
Improvements to Domain Scanner: Streamlining Your DMARC Journey
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
What are common signs that indicate my domain has no DMARC record published?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
Where should I publish my DMARC record in my domain's DNS?
at the host dmarc.yourdomain (for example, dmarc.example.com) in your authoritative DNS, and optionally at dmarc.sub.
foundational 6 min
A Complete Guide from DMARCReport: How to Identify and Safely Check Suspicious Links
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
What is Doxxing and How to Prevent it
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 10 min
What are common mistakes people make when setting up DKIM TXT records?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 4 min
Sandworm Targets Poland, Pwn2Own Vehicle Hacks, Energy Firms Targeted
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 5 min
How to Create a TXT Record and Add It to DNS
In today’s digital world, websites and email domains rely on the Domain Name System (DNS) to connect infrastructure, prove ownership, and secure communications.
foundational 6 min
The Complete DMARCReport Guide: Configuring DKIM with OpenDKIM on Your Postfix Mail Server
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
How does a required DKIM selector improve email security and deliverability?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 4 min
ChatGPT data risks, Fortinet faces setbacks, M&S CTO Resigns
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 10 min
Why should a business consider using custom DKIM for its email sending?
A business should use custom DKIM because it provides domain-aligned authentication that boosts deliverability and brand trust.
foundational 5 min
How to Tell if a Website Is Secure: The Ultimate Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
What are common signs that DKIM is not working for outgoing mail?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 6 min
What is a 550 5.7.0 local policy violation, and how to solve it?
Compliance is driving a lot of the DMARC adoption we see, says Vasile Diaconu, Operations Lead at DuoCircle. PCI DSS v4.
foundational 7 min
How Phishing Scammers Get Your Email Address - and How DMARCReport Can Help You Stop Them
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
How can I generate and interpret DMARC aggregate reports for G Suite?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 8 min
Learning to analyze an email for security and deliverability
The most common support case we handle is 'my email is going to spam since the Google changes,' says Vasile Diaconu, Operations Lead at DuoCircle.
intermediate 5 min
Zoho Mail SPF And DKIM Setup: A Complete Beginner-Friendly Guide
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 6 min
Why Google, Yahoo, Microsoft, and iCloud Are Enforcing Stricter Email Authentication Standards
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 10 min
How can I perform a DKIM lookup for my domain to verify my email authentication?
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 7 min
Configuring WP Mail SMTP for Authenticated WordPress Emails
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
Browser session hijacking, Email routing phishing, Instagram alert panic
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
advanced 2 min
25 practical reasons every MSP should add a pricing estimator to their website
1) Unclear pricing creates unnecessary stress When buyers can’t even estimate affordability, anxiety replaces curiosity.
advanced 4 min
A Practical DMARC Guide for MSPs: Securing Client Email and Building a Scalable Managed Service
Email continues to be one of the easiest ways for attackers to reach businesses.
foundational 5 min
How to Add a DKIM Record to Cloudflare - A Complete Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
intermediate 6 min
The Definitive Guide To Configuring SPF and DKIM for Salsa Labs
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 5 min
How a DKIM Replay Attack Successfully Spoofed Google - A Deep Dive
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 9 min
How can a DMARC Analyzer help reduce phishing emails sent from my domain?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 5 min
FreshMail DKIM & SPF Setup - A Complete Guide
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 11 min
What is a DMARC record and why does it matter for my email security?
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 3 min
Cyberattack Shuts School, Cyber Scam Thwarted, JLR Faces Losses
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
How to Fix “External Verification Failure” - A Complete Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
Understanding Proofpoint’s Inbound DMARC Handling - A DMARCReport Analysis
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 12 min
Setting Up DMARC for Stronger Email Authentication and Trust
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 10 min
How Can I Reduce The Risk Of Blocking Legitimate Mail When Enforcing A Strict DMARC TXT Record?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
Ultimate DreamHost DMARC Setup Guide - By DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
QR Phishing Surges, Sentinel Targets Cybercrime, Ghanaian Bank Ransomware
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Email List Validation: The Essential Guide for Modern Email Marketers
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 6 min
Email-Borne Insurance Scams: A Complete Guide to Understanding, Preventing & Securing Your Domain
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
How to set up SPF and DKIM for Autotask
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 5 min
DMARC: A Comprehensive Guide to Protect Your Domain - by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
Understanding DMARC RFC: A Comprehensive Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
How long after publishing a DMARC DNS record should I expect to see effects on delivery?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
What Are The Best Tools For Validating And Analyzing A DMARC Record Example?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
Why does Gmail reject or mark my messages as spam when my DMARC policy is strict?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
How to maintain a good email sender reputation in 2026
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 4 min
New ClickFix Scam, Dental Practice Banned, UK MPs Targeted
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 7 min
Business Email Compromise vs Phishing Attacks - A Deep Dive by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
How can DMARC improve email deliverability and reduce phishing risks?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 10 min
How can I create a DMARC record for my domain to stop email spoofing?
Creating a DMARC record takes 5 minutes: publish a DNS TXT record at dmarc.yourdomain.
foundational 9 min
CNAME vs ALIAS Records - A Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
CNAME vs A Record: What Every Domain Owner Should Know
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 14 min
Can DMARC Reports Help Me Detect Spoofing And Phishing Attempts?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Manufacturers Most Targeted, AI Operational Advisory, Google Apple Warning
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 12 min
How can I implement DMARC for multiple domains and subdomains?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 8 min
BIMI, CMC and Google: How DMARCReport Sees This Transform the Email Landscape
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 14 min
How can I use DMARC Analyzer to detect if my domain is being spoofed?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 5 min
Barracuda SPF & DKIM Configuration - A DMARCReport Guide
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 15 min
Does forwarding mailers affect DMARC alignment and how to mitigate?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
Microsoft Halts Phishing, Calendly Invite Danger, OpenAI Security Incident
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 8 min
A Records Vs. Alias Records - A Guide By DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
What causes DMARC false positives, and how can you fix them?
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 15 min
Best Tools For Bulk DMARC Lookup Across Hundreds Of Domains?
The best tools for bulk DMARC lookup across hundreds of domains are a mix of commercial SaaS platforms (e.g.
foundational 7 min
Benefits And Risks Of Penetration Testing - By DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
How Does DMARC Analyzer Compare To Mxtoolbox, Valimail, And Dmarcian For Easing Dmarc Setup?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 9 min
Answering Your Webinar Questions: Email Security - From The Desk Of DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 12 min
Best DMARC Checker Tools Comparing Dmarcian, Mxtoolbox, And Proofpoint
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
How to Secure Your iCloud Email with DMARC
Email spoofing remains one of the common tricks used to impersonate trusted senders, targeting iCloud users.
foundational 7 min
A-Records Vs. Aaaa-Records: What You Need To Know
If you’ve ever managed a domain or hosted a website, you’ve likely encountered DNS records - but not all DNS records are created equal.
foundational 10 min
Best Tools For Generating DMARC Records For Small Businesses With Minimal It Staff?
For small businesses with minimal IT staff, the best DMARC record generators are GUI-based wizards - especially DMARC Report’s DMARC Wizard - alongside dmarcian.
foundational 5 min
What’s PII and how to protect it in emails?
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
US Finance Breach, Disappointing Black Friday, JLR Cyber Incident
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 7 min
12 Common Types Of DDOS Attacks - Explained By DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 8 min
10 Critical Learnings From Verizon’s 2021 DBIR - A DMARCReport Perspective
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 8 min
10 Smart Strategies To Safeguard Your Data - Insights From DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
DMARC Aggregate Reports: GDPR/CCPA Compliance Checklist
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
5 Best Practices For Securing Your Security Token Service (Sts) Authentication
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
DMARC: Your silent shield in a billion-dollar battle against phishing
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
Secure Passkey Protection, Dismantling Lighthouse Phishing, Manufacturers Need Protection
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 12 min
10 Reasons SPF Filtering Is Critical For Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 11 min
7 Easy Steps To Verify An Spf Record Using Nslookup Properly
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 12 min
10 DNS Blacklist Insights That Improve Email Security And Deliverability Fast
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 4 min
Delhi Airport Cyberattack, Clickfix Phishing-Purerat, Linkedin Targeting-Threats
Delhi Airport Cyberattack, Clickfix Phishing-Purerat, Linkedin Targeting-Threats Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin.
foundational 4 min
Consequences of poor DMARC hygiene
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 10 min
10 Ways Modern SPF Software Prevents Brand Spoofing And Phishing
Phishing remains the #1 initial access vector for cyberattacks, and email authentication (SPF + DKIM + DMARC) is the primary technical defense.
foundational 12 min
10 Email Spoofing Detection Tools That Dramatically Improve Brand Protection
Email spoofing is trivially easy without DMARC enforcement - any attacker can forge the From header to make an email appear to come from your domain.
foundational 4 min
Ex-cybersecurity Hackers Exposed, Norwegian Bus Vulnerability, LinkedIn Credential Scam
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 11 min
Improve Deliverability Using Email DMARC Check Plus Robust SPF And DKIM Alignment
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
Ensure Email Authentication With A Domain Health Report Featuring Advanced Dmarc Insights
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
What do enterprise email and messaging platforms need for cybersecurity compliance?
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
How Verified Email and SMS Improve Customer Trust and Engagement
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
M&S-TCS breach, 183M passwords leaked, AI phishing risk
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 11 min
Understanding DKIM Subdomains: Strengthen Your Email Authentication For Better Domain Protection
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 11 min
Unlock Actionable Insights Hidden In Emails Through Powerful Ai Email Analyzer Technology
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
Email Security Meets Cybersecurity. Understanding the Role of DMARC Reports
Email has become an integral part of our everyday lives. Both personal and professional.
foundational 12 min
The Ultimate Guide To Understanding And Running A Dmarc Email Test
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
SPF format checker; Do’s and don’ts for email authentication
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
CSC Cyber Warning, Oman Strengthens Cybersecurity, Founder Suffers Phishing
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
Deliverability Starts Before DMARC: Use Verified Contact Data and Custom Domains
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
How can the government and public sector agencies protect their domains with DMARC?
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 10 min
How To Configure SPF Record For Gmail To Prevent Email Spoofing
Configuring an SPF (Sender Policy Framework) record for Gmail is one of the most effective ways to protect your domain from email spoofing and phishing attacks.
foundational 4 min
Cybersecurity Infrastructure Gaps, UK Cyber Surge, Qantas Data Breach
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 11 min
Discover How An Email Ip Reputation Checker Improves Deliverability And Sender Trust
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
Japan Brewery Hacked, Brazil Whatsapp Malware, Teens Target Nursery
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 11 min
Mta Online Email: Enhance Professional Communication And Protect Your Data Easily
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 8 min
How does DMARC prevent Vendor Email Compromise?
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 10 min
Enhance Email Authentication Using SPF Outlook For Safer Professional Communication
In today’s digital business landscape, email remains a primary communication channel - but also a frequent target for cyber threats such as phishing and spoofing.
foundational 11 min
Safe Email Checker: Verify Emails Before Sending To Avoid Spam
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 5 min
US Cyber Weakened, China Implements Reporting, Volvo Hit Ransomware
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 7 min
Top 10 Identity Verification Platforms
It’s hard to imagine a business operating in a digital environment that lacks security and trust.
foundational 4 min
Japan’s Cybersecurity Crisis, Airports Face Ransomware, Pennsylvania Revenue Alert
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 12 min
Adding SPF Records To Your Domain For Outlook Email Authentication
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 5 min
The journey of an Email: From sender’s domain to recipient’s inbox!
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 10 min
How To Use Mxtoolbox Dmarc Analyzer For Effective Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 11 min
Top 5 DMARC MTA Solutions to Enhance Your Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
Fixing dangling DMARC record issues
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 11 min
Step-By-Step Guide To Configuring Google Apps SPF Records
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 4 min
Deepfake Attack Victim, Gucci Parent Breached, Shipping Industry Targeted
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 10 min
Best Practices For Using Dmarc Report Readers To Protect Your Domain
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
How to Stay One Step Ahead in the Cybersecurity Race
In 2025, cybersecurity no longer feels like an IT side project.
foundational 10 min
Complete Guide To Domain Name Analyzer Features And How They Help Your Seo
A domain name analyzer is an essential tool for website owners, SEO professionals, and domain investors seeking to optimize their online presence.
foundational 5 min
France’s Laposte.net announced new email rules in 2025; What businesses should know
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 11 min
Complete Guide To Microsoft Technology Associate (MTA) Security Fundamentals
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
AI Scam Alert, Federal Cuts Vulnerability, American Tire Cyberattack
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 10 min
Understanding Dmarc Analysis: Protect Your Domain From Phishing
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 7 min
How to Implement DNSSEC: Best Practices and Setup Tips
DNS Security Extensions (DNSSEC) play a crucial role in strengthening the security of the Domain Name System, which serves as the backbone of the internet.
foundational 4 min
Jaguar Cyber Breach, Cybersecurity Geolocation Link, India Cybersecurity Burnout
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
What is identifier misbinding, and how does DMARC fix it?
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 11 min
Amazon SES SPF Record Explained: Best Practices For Email Authentication
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 11 min
Understanding SPF Fail Handling In Exchange Online: Tips And Best Practices
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 12 min
Improve Your Domain’s Email Security By Checking Dmarc Compliance
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Africa Fights Cybercrime, Attention Farmers Customers, Apple Prevents Threats
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 10 min
How To Set Up And Configure Microsoft 365 SPF Records For Email Security
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 5 min
Cybersecurity Basics for College Students: Understanding DMARC, SPF, and DKIM
In today's digital age, cybersecurity has become a vital aspect of our everyday lives. For college students, it’s especially crucial.
foundational 6 min
DMARC- The secret weapon for SOC 2 and ISO 27001 compliance
DMARC- The secret weapon for SOC 2 and ISO 27001 compliance DMARC is the only email authentication protocol that gives you both enforcement and visibility.
foundational 3 min
Proxy Observability: A Data-Led Playbook For Reliable Web Scraping
Web scraping at scale is not a guessing game. Reliability hinges on measurable signals, not folklore or trial-and-error.
foundational 4 min
Cyberattacks have become mainstream businesses in 2025 - AI and ransomware trends are the biggest contributors
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
McD Outlets Unsafe, Allianz Data Breached, Polish Plant Attacked
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Authenticate or Die: How Email Protocols Make or Break Your Marketing
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 11 min
Setting Up SPF, DKIM, And DMARC Records For Enhanced Security In Exchange Server
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 8 min
Maximize Email Deliverability With Trusted Email Lookup & Verification Apis
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
UAE Cybersecurity Education, DOGE Security Exposed, Son Prevents Attack
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
What is a DKIM record? A complete guide to setup, mistakes, and DMARC alignment
DKIM is the authentication protocol that survives email forwarding, says Brad Slavin, General Manager of DuoCircle.
foundational 13 min
Authoritative vs Recursive DNS: Understanding the Key Differences
Navigating the internet is like exploring a vast city filled with countless destinations, but what happens when you don't have a map?
foundational 4 min
Dell Laptop Vulnerable, Zero-Trust Migration Pending, WSU Threat Surge
Dell Laptop Vulnerable, Zero-Trust Migration Pending, WSU Threat Surge Dell Laptop Vulnerable, Zero-Trust Migration Pending.
foundational 16 min
How to Add HubSpot SPF, DMARC, and DKIM for Email Authentication
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
Essential Tools for Verifying and Configuring Proxy Connections
Whether you're managing multiple social media accounts, scraping data ethically, or just looking to enhance your privacy online.
foundational 3 min
Instant Proxy Diagnostics for Real-Time Access Evaluation
In today’s digital-first world, individuals and businesses alike demand uninterrupted access to online resources.
foundational 15 min
Stop Email CEO Fraud: Essential Tips for Prevention and Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
The Hidden Costs of Unreliable Data Access: How ISP Proxy Infrastructure Saves Research Budgets
You can have the smartest analysts and the greatest strategy - but if your proxies fail on you, your entire research project can silently fall apart.
foundational 6 min
How Proxy Servers Help Prevent Ad and Click Fraud
The internet is essentially one massive advertising billboard, and the fact that online advertising is a multi-billion-dollar industry makes the entire system.
foundational 4 min
Why do DMARC reports have a limit of 32KB?
DMARC reporting without automation is like watching security cameras without recording, says Brad Slavin, General Manager of DuoCircle.
foundational 10 min
What Is a DNS PTR Record? A Complete Explanation and Guide
In the digital landscape we navigate daily, understanding the intricacies of how information gets from one point to another can feel a bit like trying to.
foundational 5 min
Maritime Cybersecurity Policies, Amazon Phishing Alert, Red Sea Spoofing
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Is DMARCbis a game-changer or just an upgrade to DMARC?
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 10 min
What is a DNS CNAME Record? Understanding Its Usage and Configuration
In a digital world where every click counts, understanding the tools behind our online experiences is essential.
foundational 4 min
Mcdonald’s Application Tips, Ingram Micro Recovers,Gemini Email Exploit
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 9 min
What Is Typosquatting? Understanding Its Definition and Risks
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 10 min
Google Security Alerts: How to Protect Your Account from Phishing
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 10 min
What Is Phone Number Spoofing? Understanding Techniques and Risks
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 4 min
SK Telecom Breach, Massive Ransomware Outage, Beware AI Links
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 9 min
How to Prevent SQL Injection Attacks: Best Practices for Secure Applications
SQL Injection (SQLi) is a cyber vulnerability that arises when attackers manipulate SQL queries by injecting malicious code into input fields intended for user.
foundational 5 min
Sending official emails in New Zealand? You’ll need DMARC now
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 10 min
What Is a PTR Record? Understanding Its Importance in DNS Lookup
The engineering challenge with DMARC at scale is report volume, not complexity, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
PayPal Email Scam, BreachForums Operators Detained, Hackers Target Airlines
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 8 min
Decoding the ubiquity of email authentication: DMARC regulations from across the world
Compliance is driving a lot of the DMARC adoption we see, says Vasile Diaconu, Operations Lead at DuoCircle. PCI DSS v4.
foundational 13 min
Mail Header Analyzer: The Ultimate Tool for Email Security and Spam Detection
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
Rising African Cybercrime, Salt Typhoon Strikes, Nucor Files Again
Rising African Cybercrime, Salt Typhoon Strikes, Nucor Files Again From a product strategy perspective.
foundational 13 min
What is AAAA DNS? Understanding IPv6 Records and Their Importance
In the ever-evolving landscape of the internet, the way we connect and communicate is rapidly changing.
foundational 5 min
How does BIMI build psychological trust with recipients?
The shift to mandatory email authentication in 2024-2025 was the biggest change in email security in a decade, says Brad Slavin, General Manager of DuoCircle.
foundational 11 min
How to Recall Email in Outlook: Tips and Instructions for Success
In our increasingly digital world, email remains a staple of communication, whether for work or personal matters.
foundational 5 min
Humanitarian Cyber Surge, Unsubscribe Scam Alert, SEO Boosts Phishing
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
Emerging cybersecurity threats that you should know about in 2025
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 14 min
Session Hijacking: Understanding Risks and Prevention Techniques
In the vast digital landscape we navigate daily, there's a lurking menace that often goes unnoticed - session hijacking.
foundational 14 min
How To Stop Spoofing Emails: Effective Security Techniques To Prevent Phishing
Email spoofing is trivially easy without DMARC enforcement - any attacker can forge the From header to make an email appear to come from your domain.
foundational 4 min
Cybersecurity Orders Reversed, OpenAI blocks Attackers, Africa Boosts Training
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 14 min
What Is a DNS AAAA Record? An In-Depth Explanation
In the vast landscape of the internet, have you ever wondered how your favorite websites know where to find you?
foundational 5 min
DKIM in TXT or CNAME record - which one is better?
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 15 min
Email Header Analyzer: Effective Software to Detect Spam
In a world where emails pop into our inboxes like unsolicited party invites, understanding how to sift through them effectively is more crucial than ever.
foundational 15 min
How to Detect Fake Email Addresses: Tips to Identify Scams
Every day, our inboxes are filled with emails that promise the world, but unfortunately, many of them could be traps waiting to snare the unsuspecting.
foundational 4 min
Adidas Data Breach, Whatsapp Image Threat, Silent Ransom Vishing
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 14 min
What Is Ping Spoofing? Understanding the Technique and Its Impact on Network Security
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 7 min
AI-powered phishing in 2025: how intelligent attacks are outsmarting cybersecurity defenses
Phishing remains the #1 initial access vector for cyberattacks, and email authentication (SPF + DKIM + DMARC) is the primary technical defense.
foundational 13 min
Have I Been Pwned? A Simple Way to Check for Data Breaches
In our digital lives, keeping track of personal information may feel like running a marathon with no finish line.
foundational 11 min
DMARC XML Analyzer: Analyze Your Email Security Reports Effectively
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Layoffs Threaten Cybersecurity, M&S Data Breach, Hackers Nabbed Globally
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Masimo Operations Delayed, Britain Cyberattack Surge, Scotland Co-op Hacked
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 7 min
A guide on securing your subscription business from cyber threats in 2025?
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
BEC Targets Renters, Deadline ID Scam, UK Mobile Scams
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 6 min
Why the Payment Card Industry (PCI) encourages SPF, DKIM, and DMARC
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
DMARC Forensic Report: Essential Insights for Email Security
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Verified Email Threat, Costly Ransomware Attacks, Deepfake Audio Shock
Hey people! Hope you all are safe and sound, away from the clutches of the cybercrooks. It is week 4, and we are here with the 4th cyber bulletin of the month.
foundational 6 min
Why email security matters - And how to get it right?
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
Ministers Face Scams, Conduent Data Breached, Uk Faces Threats
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Does SPF hold importance in the DKIM-DMARC era?
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 15 min
DKIM TXT Records: How to Properly Configure Your Email Authentication
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 15 min
DKIM Examples: A Comprehensive Guide to Email Configuration
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 6 min
How can you strictly enforce DMARC for visibility and control?
DMARC reporting without automation is like watching security cameras without recording, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Linkedin Phishing Alert, AI Targets Inboxes, Ransomware Hits Sensata
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
Microsoft Outlook steps up email security with new policies
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 8 min
Major risks of sharing email accounts
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 4 min
Why is it unsafe to send sensitive information via email?
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 14 min
DMARC Report Analyzer for Windows: Top Tools to Boost Your Email Security
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Phishing links are scarier than malicious email attachments
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
Browser ransomware threat, Interpol arrests 306, Password hacking escalates
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
DeepSeek targets Google, South Africa Cyberattack, FBI Warns Scams
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 13 min
DMARC Report Analyzer Open Source: Analyze and Improve Your Email Security
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Setting DKIM for Microsoft 365 domain
Microsoft highly encourages its users to deploy DKIM in tandem with SPF and DMARC for holistic and efficient protection against phishing and spoofing of emails.
foundational 5 min
No-reply emails: a red flag for phishing and customer distrust
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 6 min
From DKIM to DKIM2: How email authentication is evolving
DKIM is the authentication protocol that survives email forwarding, says Brad Slavin, General Manager of DuoCircle.
foundational 14 min
How to Create a DMARC Record in GoDaddy for Enhanced Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
7 Best Practices for Writing Secure Emails to Avoid Phishing Attacks
Phishing remains the #1 initial access vector for cyberattacks, and email authentication (SPF + DKIM + DMARC) is the primary technical defense.
foundational 5 min
Booking Scam Alert, Fortinet LockBit Attack, Abu Dhabi Guidelines
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 14 min
Setting Up DMARC: A Complete Guide to Email Protection
To set up DMARC for your domain, first, ensure that you have SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) records configured.
foundational 3 min
Why is sending emails without DKIM a risk you can’t afford?
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 9 min
DKIM Best Practices: Essential Guidelines for Email Authentication
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
Cyberattack disrupts X, AI Empowers Cybercrime, Ford Airbus Hacked
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 3 min
The DMARC ‘fo’ tag options and their ideal use cases
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 10 min
Can You Have Multiple DMARC Records? A Complete Guide for Domain Configuration
One Domain, One DMARC Record: Overview DMARC, or Domain-based Message Authentication, Reporting & Conformance.
foundational 13 min
Bluehost Verification: A Step-by-Step Guide to Account Setup
Setting up a new website can feel overwhelming, especially when it comes to navigating account verification with platforms like Bluehost.
foundational 4 min
Saudi construction targeted, Latin America vulnerable, Middle East secures
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 12 min
DKIM Setup on Bluehost: A Step-by-Step Email Configuration Guide
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 14 min
Add TXT Record on Namecheap: A Complete DNS Guide
Adding a TXT record in Namecheap might sound complicated, but it plays a crucial role in managing your domain’s online presence.
foundational 17 min
How To Add Your Domain To HostGator: A Step-by-Step Guide
Adding a domain to HostGator can feel like a daunting task, especially if you’re new to web hosting. But don’t worry!
foundational 15 min
No DMARC Record Found? Here's How to Fix Your Domain's Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
Car Cameras Hackable, UK Water Breach, Thailand Frees Captives
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 8 min
Top 8 email security protocols that can shield your brand’s reputation
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 3 min
How does DMARC compensate for SPF drawbacks?
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
DeepSeek lacks security, Japan strengthens cybersecurity, Trump’s Cyber Nominee
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
What is the difference between Sender Policy Framework and Sender ID?
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 6 min
How does DMARC shield your business from different email-based cyber threats?
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Apple Fixes USB, Embargo Leaks Data, Politics Hinder Cybersecurity
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 3 min
Learning to find the source owner using the ‘envelope_to’ domain
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
Cybercriminals Target X, Nigeria Fights Cyberattacks, Threat Actors Attack
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
What problems trigger an SPF record to break and how do you fix them?
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
RFC 5322 laid down email security specifications for Sender Policy Framework
Compliance is driving a lot of the DMARC adoption we see, says Vasile Diaconu, Operations Lead at DuoCircle. PCI DSS v4.
foundational 5 min
Lynx Ransomware Professionalized, Super Bowl Cyberthreats, AI Chatbot Cybercrime
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
What is a DKIM signature, and how does it help filter emails?
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 6 min
Setting Apple Business Mail using Apple Business Connect
The shift to mandatory email authentication in 2024-2025 was the biggest change in email security in a decade, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Steps to add SPF, DKIM, and DMARC records to AWS DNS-Route 53
The 10-lookup limit is a resource protection mechanism in RFC 7208, not a security feature, says Adam Lundrigan, CTO of DuoCircle.
foundational 4 min
Trump fires investigators, Microsoft 365 Threats, US Cybersecurity Insufficient
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
Yahoo Japan rings in the new year with DMARC adoption
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 4 min
Google accounts hijacked, Stealers infiltrate YouTube,Woman loses $850K
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 5 min
Packers Fans Scammed, Pentagon Bans Tencent, Telecom Namibia Targeted
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 3 min
Setting SPF, DKIM, and DMARC for Omnisend
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Water Sector Targeted, Essential Ai Security, Trump Cybersecurity Shifts
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
LockBit ransomware dismantled, Google tricked AI, Email platform threatened
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
Europol DDoS Operation, Texas Data Breach, Dubai Police Impersonated
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
Why do traditional cybersecurity solutions fall short against modern, sophisticated cyberattacks?
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Middlesbrough Council Targeted, Interpol Cyber Operation, Unaware Employees Risk
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 8 min
9 technologies to protect your emails from cyber actors
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Getting started with BIMI for Zoho Mail
BIMI (Brand Indicators for Message Identification) displays a brand's verified logo next to authenticated emails in supporting clients.
foundational 4 min
Cybercrime Network Dismantled, CBI Investigates Cyberfraud, CISA Stops Hacking
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 3 min
5 key contributors to DMARC’s development
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 4 min
Cybersecurity threatens water, Android users warned, Mexico faces cyberattacks
It’s already week four of November, and the holidays are just around the corner. Leniency at workplaces is already resulting in increased cases of cyberattacks.
foundational 5 min
Understanding the gaps in the global cybersecurity landscape in 2024
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 4 min
Akira flaunts victims, Idaho targets orthodontist, AI granny protects
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
Vendor Causes Breach, Texas Supplier Hacked, Nokia Investigates Breach
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 8 min
What is DMARC compliance and how can you achieve it?
Compliance is driving a lot of the DMARC adoption we see, says Vasile Diaconu, Operations Lead at DuoCircle. PCI DSS v4.
foundational 4 min
Snowflake Attacker Arrested, Hellcat Targets Schneider, Whistleblower Granted Relief
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Insufficient Cybersecurity Training, FakeCall Malware Threat, Women Duped Airport
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
What is the right way to split DKIM keys?
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
Things Financial Institutions Need to Know About Spoofing
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
Pokémon Company Hacked, American Water Restored, Schools increasingly targeted
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 7 min
4 sectors that need email authentication the most and why
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Malware terrorizes Linux, Cyberattack disrupts water, Cyber incidents surge
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Manufacturing industries targeted, Senator Victimizes Deepfake ,Kia owners beware
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
How can MFA and DMARC secure your online presence?
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 3 min
Best practices for forwarding emails to Gmail users
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
Kansas Water Cyberattack, Moneygram Halts Operations, Telegram Shares Data
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Phishing and Spoofing- Two emerging cyberattack trends in 2024
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
How to configure SPF, DKIM, and DMARC records for Brevo?
DKIM is the authentication protocol that survives email forwarding, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Chrome Password Risk, Tycoon Sanctioned Cyber, Election Panic Rumors
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Turkish SMBs Targeted, Cyber Expert Shortage, Singapore's Chinese Syndicate
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Understanding TLS downgrade attacks and how MTA-STS mitigates them
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Google’s guidelines to send emails to Gmail users
Have you ever wondered why even legitimate emails sent by you to Gmail recipients don’t reach their inboxes?
foundational 6 min
Role of DMARC in detecting and preventing shadow IT
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
FBI Warns Hackers, Halliburton Cyber Threats, TfL Targeted Threat
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Security requirements for Gmail
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 3 min
DMARC reporting’s three-step checklist
DMARC reporting without automation is like watching security cameras without recording, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
India Cyberattack Surge, Remote Work Risks, Patelco Data Breach
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Social engineering attacks- techniques and prevention
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 3 min
Key aspects of DMARC interoperability
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
Chinese Router Controversy, Toyota Data Breach, Iran's Trump Involvement
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
What is the difference between anti-spam and DMARC?
We understand that spam emails are one of the most annoying things that you have to deal with on a daily basis.
intermediate 5 min
Doing Sender Policy Framework (SPF) delegation the right way
Compliance is driving a lot of the DMARC adoption we see, says Vasile Diaconu, Operations Lead at DuoCircle. PCI DSS v4.
foundational 4 min
Massive Classroom Breach, Cybercrime Treaty Approved, Scammer Targets Journalist
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Facebook Page Hijacking, $75m Ransom Payment, And State-Sponsored Spyware
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
A snapshot of ransomware evolution
Ransomware is a cyberattack attempted using a malware that intends to block access to a computer system or file.
foundational 5 min
Creating and managing Verified Mark Certificates (VMC) for BIMI
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
China Targets India, Security Firm Mistake, Zeus Hacks Olympics
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
Your domain needs SEGs and email authentication, both
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
A guide to enhancing email delivery with Google Postmaster
The most common support case we handle is 'my email is going to spam since the Google changes,' says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
Buggy CrowdStrike Crash, Dating Apps Vulnerabilities, Ukraine ICS Malware
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
Banks Drop OTPs, Major Cyber Heist, Spying Spouses Arrested
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
What is MTA-STS and why do you need it to improve email security?
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
Ambient Light Spying, Cybersecurity Prices Drop, Euro 2024 Threats
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 5 min
Understanding credential phishing and the role of DMARC in defense
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 4 min
Kenya-US Cybersecurity Collaboration, Papua New Guinea Data Security, Child hospital Ransomware
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
7 ways admins can contribute to protecting G Suite from phishing
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 4 min
Asian Telecom Cyberattacks, Kaspersky Ban Dilemma, CDK Cyberattack Disrupts Dealerships
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
Patching Versus Isolating Cybersecurity Vulnerabilities- Which is Better in 2024?
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 4 min
Swift Fan's Spending Spree, WPP CEO's Deepfake Scam, Russian Ransomware Extorts Millions!
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 5 min
How Can You Check Your Domain Reputation?
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 3 min
Gmail’s ‘Best Guess’ SPF Status- What is it and How can you avoid it?
The shift to mandatory email authentication in 2024-2025 was the biggest change in email security in a decade, says Brad Slavin, General Manager of DuoCircle.
intermediate 3 min
Learning to Configure SPF for Amazon SES
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
intermediate 8 min
Decoding I-Tag DKIM Vulnerability and Its Impact on Email Deliverability and Security
The most common support case we handle is 'my email is going to spam since the Google changes,' says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 6 min
A Roundup of the Top Phishing Attacks in 2024 So Far
Domain spoofing is trivially easy without DMARC enforcement, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
DMARC Setup Stage 1- Preparation
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 3 min
Fixing Google Calendar Invites That Fail DMARC Checks
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 4 min
DomainKeys and DKIM Are Slightly Different
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 5 min
Disabling DMARC Reports: A Guide to Streamlining Your Domain's Email Security
DMARC reporting without automation is like watching security cameras without recording, says Brad Slavin, General Manager of DuoCircle.
intermediate 5 min
What is a DKIM Replay Attack and How to Prevent it?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 8 min
Technical and Marketing Team’s Joint Efforts For Email Deliverability
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
Learning to Send DMARC-Compliant Emails on Behalf of Others
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 3 min
Integrating all Cybersecurity Elements for Alignment and Efficacy
The most common DMARC failure we see is alignment, not authentication, says Adam Lundrigan, CTO of DuoCircle.
foundational 6 min
A Guide to Deploying SPF, DKIM, and DMARC Like a Pro!
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
How Will Google and Yahoo’s New Sender Requirements Impact European Businesses?
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 5 min
Creating Microsoft 365 Transport Rule to Quarantine Unauthorized Inbound Emails
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 5 min
The Cyber Threat Landscape In A Glance: 2024
The email authentication landscape changed permanently in 2024, says Brad Slavin, General Manager of DuoCircle. Google, Yahoo, and now Microsoft all require DMARC.
foundational 3 min
Configuring SPF, DKIM, and DMARC For Klaviyo
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 4 min
A Basic Guide to Email Authentication for Legal Professionals
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 3 min
How Do You Configure Third-Party Vendors to Be DMARC Compliant?
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 6 min
Phishing vs. Smishing vs. Vishing: Everything You Need to Know
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
foundational 5 min
What is the Difference Between Email Authentication and Email Encryption?
MTA-STS is the protocol most organizations forget about, says Adam Lundrigan, CTO of DuoCircle.
foundational 4 min
Fixing DMARC Enforcement For Smaller and Emerging Brands
Compliance is driving a lot of the DMARC adoption we see, says Vasile Diaconu, Operations Lead at DuoCircle. PCI DSS v4.
foundational 4 min
Google’s New DMARC Compliance Requires You to Stop Impersonating Gmail From: Headers
Google's February 2024 requirements were a turning point, says Brad Slavin, General Manager of DuoCircle. Before that, DMARC was a recommendation.
foundational 6 min
Why Email Marketers Should Care to Implement BIMI?
BIMI (Brand Indicators for Message Identification) displays a brand's verified logo next to authenticated emails in supporting clients.
foundational 5 min
Everything You Need to Know About DNS Blocklist
The engineering challenge with DMARC at scale is report volume, not complexity, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
Why DNS Matters in Email Security?
The engineering challenge with DMARC at scale is report volume, not complexity, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
DMARC Best Practices for Domains and Subdomains
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
Gmail and Yahoo Email Error Codes Explained
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 5 min
SPF Softfail or SPF Hardfail: What’s Right for Your Domain?
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 3 min
Why Are Your Emails Getting Blocked When Sent From Your Yahoo Account?
The global email marketing market reached USD 911.3 million in 2022 and is estimated to grow at a .
foundational 4 min
SMTP Smuggling is Allowing Email Spoofing; DMARC Prevents Such Attacks
In 2022, America’s Cybersecurity & Infrastructure Security Agency assessed federal and critical infrastructure partners.
foundational 3 min
A Guide to Leveraging DMARC to Mitigate Email-Based Attacks
Let’s face it: the fear of falling prey to cyberattacks through deceptive emails is emerging at a than ever.
foundational 3 min
How to Setup DMARC to Meet Google’s New Requirements for Bulk Senders?
Google and Yahoo have unveiled a new email authentication policy that will be effective from .
foundational 5 min
The Importance of DMARC For Email Marketing and How to Get Started With it
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
Why is Email Deliverability Important for Online Businesses?
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 4 min
Penetration Tests are Indicating Worse Cybersecurity Postures Across Globe; Phishing Attacks are Topping the List
The effectiveness of data protection measures and the utility of available patches have worsened in recent years.
foundational 3 min
‘No DMARC Record Found’ Bug Bounty is Actually a Beg Bounty- Don’t Fall For it
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 4 min
What Is Cyber Threat Hunting?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
A Reality Check On Email Security Threats In Healthcare!
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
intermediate 4 min
Getting Rid of Common SPF Errors for Email Security and Delivery
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
8 Types of Phishing Attacks to Be Wary of
Phishing remains the #1 initial access vector for cyberattacks, and email authentication (SPF + DKIM + DMARC) is the primary technical defense.
foundational 4 min
Detecting DMARC Issues Through Pentesting
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
DMARC History: Why SPF and DKIM Weren’t Sufficing
DMARC is driven by the authentication results of SPF and DKIM to prevent fraudulent emails sent from your domain from showing up in the primary inboxes of.
foundational 4 min
8 Misconceptions About DMARC and its Deployment for Businesses
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 4 min
Why You Should Take DMARC Adoption Seriously?
The digital realm is replete with grave cyberattacks that can wreak havoc on an organization’s operations, efficiency, and integrity.
intermediate 3 min
The Emergence of DKIM: A Cryptography-Based Email Authentication Protocol
Navigating through the complexities of email security and the limitations of SPF.
intermediate 4 min
The History and Evolution of Sender Policy Framework (SPF)
The digital landscape is ever-expanding, both in a malicious as well as positive sense.
foundational 4 min
Why Should You Avoid SPF PTR?
It is only prudent to avoid using PTR for SPF email authentication.