Bitbucket Audit: Secret Scanning Rule Deleted for Project or Repository

Flags Bitbucket audit events indicating secret scanning rules were deleted at the project or repository level.

FreeReviewedSigma · Low · v5

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

ATT&CK techniques

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule flags Bitbucket audit events where a secret scanning rule is deleted at the project or repository scope. Attackers may remove or disable scanning to reduce visibility into exposed credentials and other secrets. It relies on Bitbucket audit telemetry indicating the affected scope (Projects/Repositories) and the specific deletion actions for secret scanning rules.

Reporting behind it

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Bitbucket Audit: Secret Scanning Rule Deleted for Project or Repository

Pivot detection · T1685 · 9 related

Changelog

v5
Candidate ingested via manual entry.2026-07-31
v4
Candidate ingested via manual entry.2026-07-31
v3
Candidate ingested via manual entry.2026-07-31
v2
Candidate ingested via manual entry.2026-07-31
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.

bitbucket-audit-secret-scanning-rule-deleted-for-project-or-repository-ff91e3f0

title: "Bitbucket Audit: Secret Scanning Rule Deleted for Project or Repository"
id: 237dbce9-4966-4d69-ab99-a0357f5afbbd
status: test
description: This rule flags Bitbucket audit events where a secret scanning rule is deleted at the project or repository scope. Attackers may remove or disable scanning to reduce visibility into exposed credentials and other secrets. It relies on Bitbucket audit telemetry indicating the affected scope (Projects/Repositories) and the specific deletion actions for secret scanning rules.
references:
  - https://confluence.atlassian.com/bitbucketserver/audit-log-events-776640423.html
  - https://confluence.atlassian.com/bitbucketserver/secret-scanning-1157471613.html
  - https://github.com/SigmaHQ/sigma/blob/master/rules/application/bitbucket/audit/bitbucket_audit_secret_scanning_rule_deleted.yml
author: Muhammad Faisal (@faisalusuf), Huntrule Team
date: 2024-02-25
tags:
  - attack.defense-impairment
  - attack.t1685
logsource:
  product: bitbucket
  service: audit
  definition: 'Requirements: "Basic" log level is required to receive these audit events.'
detection:
  selection:
    auditType.category:
      - Projects
      - Repositories
    auditType.action:
      - Project secret scanning rule deleted
      - Repository secret scanning rule deleted
  condition: selection
falsepositives:
  - Legitimate user activity.
level: low
license: DRL-1.1
related:
  - id: ff91e3f0-ad15-459f-9a85-1556390c138d
    type: derived

Convert

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