Google Workspace Government Attack Warning

Detects a login attempt in Google Workspace flagged as a potential attack by a government-backed threat actor

Sigma rule (View on GitHub)

 1title: Google Workspace Government Attack Warning
 2id: eafe6f2b-cfec-4612-aec2-49563c33a087
 3status: experimental
 4description: Detects a login attempt in Google Workspace flagged as a potential attack by a government-backed threat actor
 5references:
 6    - https://cloud.google.com/logging/docs/audit/gsuite-audit-logging
 7    - https://cloud.google.com/logging/docs/audit/understanding-audit-logs
 8    - https://developers.google.com/workspace/admin/reports/v1/appendix/activity/login#gov_attack_warning
 9author: Tom Kluter
10date: 2026-04-28
11tags:
12    - attack.privilege-escalation
13    - attack.persistence
14    - attack.initial-access
15    - attack.impact
16    - attack.stealth
17    - attack.t1078
18logsource:
19    product: gcp
20    service: google_workspace.login
21detection:
22    selection:
23        protoPayload.serviceName: 'login.googleapis.com'
24        protoPayload.metadata.event.eventName: 'gov_attack_warning'
25    condition: selection
26falsepositives:
27    - Unknown
28level: medium

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