Suspicious User Access Blocked by Azure Conditional Access (via signinlogs)

title: Suspicious User Access Blocked by Azure Conditional Access (via signinlogs)
id: 73b15c0a-849f-5da8-bd31-13d0b41fde50
status: stable
description: This rule detects access has been blocked by Conditional Access policies. The access policy does not enable token issuance which might be sights≈ of unauthorizeed login to valid accounts.
references:
    - https://attack.mitre.org/techniques/T1078/004/
    - https://attack.mitre.org/techniques/T1110/
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-accounts
author: Huntrule Team
date: 2026-01-13
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.credential-access
    - attack.initial-access
    - attack.stealth
    - attack.t1110
    - attack.t1078.004
logsource:
    product: azure
    service: signinlogs
detection:
    selection:
        ResultType: 53003
    condition: selection
falsepositives:
    - Unknown
level: medium