Valimail Enforce - DMARC Policy Weakened to None

This query searches for DMARC policies changed to 'none', which disables enforcement and leaves the domain vulnerable to spoofing and phishing attacks.

Detection logic

Detection requirements

Platform: Containers ESXi IaaS Identity Provider Linux macOS Network Devices Office Suite SaaS Windows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
Log source product: valimailenforce
Log source service: valimailenforceevents_cl

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Detection rules

Valimail Enforce - DMARC Policy Weakened to None

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules