Suspicious Cloud Storage Access by Vertex AI P4SA Identity (via gcp)
- Product
- gcp
- Service
- gcp.audit
- Author
- HuntRule
- Published
- 2026-10-18
- Updated
- 2026-10-18
ATT&CK techniques
CollectionRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects Cloud Storage object and bucket access performed by the Vertex AI service agent identity, a data access behavior shown in the Double Agents research to enable theft of data via a stolen P4SA credential. Storage reads by the AI platform agent outside expected pipelines indicate misuse of the compromised service identity to reach protected data.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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