Detection: Storage Bucket IAM Permission Set
Overview
Detect when a storage IAM policy was set. Unauthorized or accidental modifications to storage IAM policies can expose sensitive data to unauthorized access or compromise data integrity. Monitoring these changes ensures proper access controls and mitigates security risks.
References:
Usage
Run the detection in your terminal:
powerpipe detection run gcp_audit_log_detections.detection.storage_bucket_iam_permission_setSnapshot and share results via Turbot Pipes:
powerpipe loginpowerpipe detection run gcp_audit_log_detections.detection.storage_bucket_iam_permission_set --shareSQL
This detection uses a named query:
select tp_timestamp as timestamp,method_name as operation,resource_name as resource,authentication_info.principal_email as actor,tp_source_ip as source_ip,tp_index as project,tp_id as source_id,-- Create new aliases to preserve original row data*
from gcp_audit_logwhere method_name ilike 'storage.setiampermissions' and severity != 'Error'-- TODO: Do we need to check operation?-- and (operation_src is null or operation_src.last = true)
order by timestamp desc;