Possible Sign-ins by Unknown Devices (via signinlogs)

title: Possible Sign-ins by Unknown Devices (via signinlogs)
id: 91606b73-fa5b-539e-b0cb-c69a47a089ce
status: stable
description: This rule detects Sign-ins by unknown devices from non-Trusted locations.
references:
    - https://attack.mitre.org/techniques/T1078/004/
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-devices#non-compliant-device-sign-in
author: Huntrule Team
date: 2026-02-12
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.initial-access
    - attack.stealth
    - attack.t1078.004
logsource:
    product: azure
    service: signinlogs
detection:
    selection:
        AuthenticationRequirement: singleFactorAuthentication
        ResultType: 0
        NetworkLocationDetails: '[]'
        DeviceDetail.deviceId: ''
    condition: selection
falsepositives:
    - Unknown
level: low