Inbound Sender Domains Failing Email Authentication

This query lists inbound sender domains with the most email authentication failures (DMARC, DKIM, SPF, and Composite Authentication), using the EmailEvents table.

Detection logic

Detection requirements

Platform: Identity Provider Linux macOS Office Suite SaaS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: microsoftthreatprotection
Log source service: emailevents

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Detection rules

Inbound Sender Domains Failing Email Authentication

Detection logic

Detection requirements

MITRE ATT&CK mappings

From the source

Licence

Authorship

Detection rules