title: GCP Vertex AI Prediction Calls
id: 2f0b7c3e-6a41-4c1e-9b8a-1d2e3f4a5b08
status: experimental
description: Vertex AI prediction/generation calls (Data Access logs required). Railway's GCP guidance names Vertex AI as a common abuse target; baseline in SIEM.
references:
    - https://blog.railway.com/p/security-disclosure-recommendation-check-for-anomalous-gcp-access
author: Defensive detection pack
date: 2026-10-22
tags:
    - attack.impact
    - attack.t1496
logsource:
    product: gcp
    service: gcp.audit
detection:
    selection:
        gcp.audit.service_name: aiplatform.googleapis.com
        gcp.audit.method_name|contains:
            - Predict
            - GenerateContent
    condition: selection
falsepositives:
    - Legitimate AI workloads
level: low