Phishing remains the leading initial access vector in breaches. Domain owners also bear brand damage when their name is spoofed.
Mistake 1: Blaming users while leaving the domain unprotected#
Why it hurts: this undermines phishing protection at the point where mailbox providers make their decision, and it is rarely surfaced by your own tooling until placement drops.
Fix: Enforce DMARC p=reject so exact-domain spoofing fails.
Mistake 2: Allow-listing vendors broadly, which bypasses filtering#
Why it hurts: this undermines phishing protection at the point where mailbox providers make their decision, and it is rarely surfaced by your own tooling until placement drops.
Fix: Register lookalike domains or monitor them for registration.
Frequently asked questions#
Does DMARC stop all phishing?
It stops exact-domain spoofing. Lookalike domains and display-name spoofing require additional controls.