DMARC for CISOs: What It Actually Protects (And What It Doesn’t)

If you’re a CISO reading this, you probably think DMARC is working harder than it actually is. Most organizations that have deployed DMARC believe it’s a comprehensive email security control. It shows up on audit checklists. It’s part of compliance frameworks. You’ve probably spent resources implementing it. But here’s the reality: DMARC protects your organization’s ability to send trusted email. It does almost nothing to protect your people from inbound attacks. This distinction matters, and it’s one that most security teams blur.

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