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Rare service principal authentication tuple

Detects successful service principal authentications from first-seen IP and user-agent tuples compared to baseline.

Detection logic

Detection requirements

Platform
ContainersIaaSIdentity ProviderOffice SuiteSaaS

The rule states no platform. This is derived from the 3 ATT&CK techniques it maps to.

Log source product
azureactivedirectory
Log source service
signinlogs

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