UnknownMicrosoft Sentinel analytics
Login attempts using Legacy Auth
This query identifies use of legacy authentication in Microsoft Entra ID sign-in activity, which can bypass Azure Conditional Access policies. It includes UEBA logs IdentityInfo and BehaviorAnalytics for context.
Detection logic
Detection requirements
- Platform
- ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
- Log source product
- azureactivedirectorybehavioranalytics
- Log source service
- behavioranalyticsidentityinfosigninlogs
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
No references are available for this detection.
From the source
- At source
- Open at source
- Upstream identifier
- b7918a0a-c6fe-4b6d-9111-b0b0c477f1a8
- Tagged by the source as
- InitialAccessPersistence
Licence
- Published under
- MIT LicenseRead the licence
- Attribution
- Required
- Obtained under
- MITRead the origin licence
Authorship
- Published
- Aug 29, 2026
- Version
- 1