Sigma rule: Sign-in Failure Due to Conditional Access Requirements Not Met

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-4d3d54285e70, updated 2026-10-17T00:00:00.000Z.

Rule

Title
Sign-in Failure Due to Conditional Access Requirements Not Met
Status
test
Level
high
Author
Yochana Henderson, '@Yochana-H'
Date
2022-06-01
Modified
2026-10-17
File
rules/cloud/azure/signin_logs/azure_conditional_access_failure.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Define a baseline threshold for failed sign-ins due to Conditional Access failures

Log source

product
azure
service
signinlogs

Detection

selection:
    ResultType: 53003
    ResultDescription: 'Blocked by Conditional Access'
condition: selection

False positives (as the rule lists them)

  • Service Account misconfigured
  • Misconfigured Systems
  • Vulnerability Scanners

Tags

  • attack.privilege-escalation
  • attack.persistence
  • attack.initial-access
  • attack.credential-access
  • attack.stealth
  • attack.t1110
  • attack.t1078.004

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/azure/signin_logs/azure_conditional_access_failure.yml

Sources and licences

  • SigmaHQ

    "Sign-in Failure Due to Conditional Access Requirements Not Met" by Yochana Henderson, '@Yochana-H' (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/azure/signin_logs/azure_conditional_access_failure.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Sign-in Failure Due to Conditional Access Requirements Not Met",
entity page, dataset version ref-4d3d54285e70, updated 2026-10-17T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/b4a6d707-9430-4f5f-af68-0337f52d5c42 (accessed 2026-11-03).
Underlying source: SigmaHQ rule b4a6d707-9430-4f5f-af68-0337f52d5c42, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.