Unfamiliar Sign-In Properties
Detects sign-in with properties that are unfamiliar to the user. The detection considers past sign-in history to look for anomalous sign-ins.
Detection logic
Detection requirements
- Platform
- ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
- Log source product
- azure
- Log source service
- riskdetection
Known benign triggers
- User changing to a new device, location, browser, etc.
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
References
| Reference | Cited by |
|---|---|
| learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins | 19 |
| learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#unfamiliar-sign-in-properties | 22from 2 sources |
From the source
- At source
- Open at source
- Upstream identifier
- 128faeef-79dd-44ca-b43c-a9e236a60f49
- Tagged by the source as
- attack.initial-accessattack.persistenceattack.privilege-escalationattack.stealth
Licence
- Published under
- Detection Rule License 1.1Read the licence
- Attribution
- Required
Authorship
- Published
- Aug 26, 2026
- Version
- 1