Detection rules › Sigma
Google Workspace Government Attack Warning
Detects a login attempt in Google Workspace flagged as a potential attack by a government-backed threat actor
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | |
| Persistence | |
| Privilege Escalation | |
| Stealth |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| Google Workspace | gov_attack_warning: Government-Backed Attack Warning |
Rule body
title: Google Workspace Government Attack Warning
id: eafe6f2b-cfec-4612-aec2-49563c33a087
status: experimental
description: Detects a login attempt in Google Workspace flagged as a potential attack by a government-backed threat actor
references:
- https://cloud.google.com/logging/docs/audit/gsuite-audit-logging
- https://cloud.google.com/logging/docs/audit/understanding-audit-logs
- https://developers.google.com/workspace/admin/reports/v1/appendix/activity/login#gov_attack_warning
author: Tom Kluter
date: 2026-04-28
tags:
- attack.privilege-escalation
- attack.persistence
- attack.initial-access
- attack.impact
- attack.stealth
- attack.t1078
logsource:
product: gcp
service: google_workspace.login
detection:
selection:
protoPayload.serviceName: 'login.googleapis.com'
protoPayload.metadata.event.eventName: 'gov_attack_warning'
condition: selection
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
protoPayload.serviceName: 'login.googleapis.com'
protoPayload.metadata.event.eventName: 'gov_attack_warning'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
protoPayload.metadata.event.eventName | eq |
| field:"gcp::metadata_event_name" kind:eq value:"gov_attack_warning" |
protoPayload.serviceName | eq |
| field:"gcp::service_name" kind:eq value:"login.googleapis.com" |