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GCP Audit Logs - Data Access Logging Exemption Added for Principal

Detects when a principal (user or service account) is exempted from GCP data access audit logging. This is a critical security event as it reduces visibility into privileged operations and may indicate an attempt to…

Description

Detects when a principal (user or service account) is exempted from GCP data access audit logging. This is a critical security event as it reduces visibility into privileged operations and may indicate an attempt to hide malicious activity. Adversaries may exempt their accounts from audit logging to evade detection while performing reconnaissance, privilege escalation, or data exfiltration. This rule monitors SetIamPolicy operations that add audit log exemptions for ADMIN_READ, DATA_READ, or DATA_WRITE log types.

Detection logic

Detection requirements

Platform
IaaSIdentity ProviderOffice SuiteSaaS

The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.

Log source product
gcpauditlogsdefinition
Log source service
gcpauditlogs

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