A Roundup of the Top Phishing Attacks in 2024 So Far

A Roundup of the Top Phishing Attacks in 2024 So Far

Is your mailbox flooded with unsolicited emails? While most of these emails are harmless (like bulk or spam), some of them have the potential to seriously damage your entire ecosystem. Year after year, these emails are getting more frequent and formidable. In fact, we are only halfway into 2024, and the number of fraudulent emails…

What is the Role and Relevance of PTR DNS Resource Records?

What is the Role and Relevance of PTR DNS Resource Records?

You might be familiar with DNS records that map domain names to IP addresses. But have you ever come across the term “PTR (Pointer) records” or perhaps “reverse DNS records?” PTR records, or reverse records, as the name suggests, are the exact opposite of “a” DNS records. So, instead of translating domain names to IP…

Why Does DKIM Signature Fail Because of Canonicalization?

Why Does DKIM Signature Fail Because of Canonicalization?

There is a multi-step journey between your outbox and the recipient’s inbox. Since the process is very quick, we don’t realize that when an email is in transit, it’s prone to tampering and modifications by malicious actors. You can deploy DKIM (DomainKeys Identified Mail) to ensure nobody tampers with your emails in transit and prevent…

Fixing Google Calendar Invites That Fail DMARC Checks

Fixing Google Calendar Invites That Fail DMARC Checks

Google Calendar invites fail DMARC checks when the recipient replies to them, and the response goes back to Google’s servers instead of the sender’s domain. This happens because the ‘From’ address and the originating server don’t match.  This failure also occurs due to the fact that Google uses shared IP addresses to send Google Calendar…

Is Your Google Workspace DKIM Setup Broken?

Is Your Google Workspace DKIM Setup Broken?

Deploying and configuring DKIM on Google Workspace is a two-step process, and administrators often skip the second step. In such cases, DKIM and DMARC function properly, and email delivery is not impacted either. However, DKIM doesn’t authenticate emails using your custom domain.  Let’s see what these two steps are and how you can avoid breaking…

DomainKeys and DKIM Are Slightly Different

DomainKeys and DKIM Are Slightly Different

DomainKeys is an older technology that was combined with Cisco’s Identified Internet Mail (IIM) to develop DKIM—an email authentication protocol that prevents phishing emails sent from your domain from reaching recipients’ primary inboxes. Moreover, DKIM also ensures that nobody tampers with the message in transit.  People often use these terms interchangeably, but let’s figure out…