Email Security Foundations #01: Why email is still the most dangerous attack surface
This post kicks off the Email Security Foundations series here on MSDigest.net. It’s a practical, no‑nonsense walkthrough of SPF, DKIM, DMARC, DANE, MTA‑STS, and BIMI written specifically for Microsoft 365 admins who want email to stop being the weakest link. Email spoofing remains one of the most effective attacks on the internet, largely because most organizations still allow it. The attack that really should not still work in 2026 A classic example is a Business …