This briefing explains a public 2024 advisory. It is not a live incident feed; consult the original source and current vendor guidance for updates.
What the advisory tells us
The advisory connects weak DMARC policies to impersonation in spearphishing campaigns. DMARC is a domain-level email policy, so effective deployment depends on understanding the legitimate systems that send mail for a domain.
What teams can do
Inventory sending domains and legitimate mail services, then review SPF, DKIM and DMARC configuration. Roll out enforcement carefully and monitor reports to avoid disrupting authorized mail.
Read the original advisory
FBI IC3 / federal partners: source advisory (PDF) ↗
The linked advisory is an independent government source. It does not endorse CyberWall or its products.