huntrule

Bitbucket audit: Project secret scanning allowlist rule added

Alerts when Bitbucket records a project secret scanning allowlist rule being added via the audit log.

FreeReviewedSigma · Low · v5
Product
bitbucket
Service
audit
Author
Muhammad Faisal (@faisalusuf) (SigmaHQ), DRL 1.1
Published
2024-02-25
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule flags Bitbucket audit events where a secret scanning allowlist rule is added for a project. Attackers can use allowlists to bypass or reduce the effectiveness of secret detection, making the change an indicator of defense impairment. It relies on Bitbucket audit telemetry capturing the audit type category as Projects and the specific action for adding the allowlist rule.

Reporting behind it

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Suspicious Security Software Uninstallation via WMIC Product Call Uninstall (Chaos Ransomware)
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Bitbucket audit: Project secret scanning allowlist rule added
Pivot detection · T1685 · 9 related

Changelog

v5
  1. v5
    Candidate ingested via manual entry.2026-07-31
  2. v4
    Candidate ingested via manual entry.2026-07-31
  3. v3
    Candidate ingested via manual entry.2026-07-31
  4. v2
    Candidate ingested via manual entry.2026-07-31
  5. v1
    No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.