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Google Cloud Vertex AI Agent Engine permission risk and double agent behavior

April 4, 2026Unit 42

Unit 42 reports a critical permission risk in Google Cloud Vertex AI Agent Engine enabling unintended access and data exfiltration, warning that compromised agents can become double agents.

AI agents can turn into "double agents" if compromised.
Our research found a critical permission risk in Google Cloud's Vertex AI Agent Engine, allowing unintended access and data exfiltration.
critical permission risk in Google Cloud's Vertex AI Agent Engine
allowing unintended access and data exfiltration.
Unit 42
agent securitypermissionsgoogle cloudllm driven

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