Blog
Insights on domain security, email authentication, and web protection.
Coming soon
The Heurys blog is on the way
We are preparing deep dives on DMARC, SSL monitoring, and real-world attack patterns. Check back soon — or subscribe below to get notified when the first posts go live.
Preview of what we are writing
Why 78% of domains fail basic email authentication
Industry scans show most organizations still ship without aligned SPF, working DKIM, or enforceable DMARC — here is what that means for deliverability and fraud risk.
The complete guide to DMARC, SPF, and DKIM
A practical walkthrough of how the three protocols fit together, common misconfigurations we see in the wild, and how to roll out policy without breaking mail flow.
How email spoofing attacks work (and how to stop them)
From header forgery to lookalike domains — the mechanics attackers use and the monitoring plus policy steps that actually reduce business email compromise.
SSL certificate monitoring: What you need to know
Expiry is only half the story. Chain issues, weak ciphers, and unexpected issuer changes deserve the same alerting you give uptime and DNS.
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