Google ADK Security: 5 Layers That Defend AI Agents From Prompt Injection
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Google ADK security layers against prompt injection, cutting-edge and actionable.
Summary
Indirect prompt injection, ranked #1 on OWASP Top 10 for LLM apps (LLM01:2025), exploits tool responses to hijack agents. Google ADK counters this with five framework-level layers: per-tool identity (agent-auth/user-auth), guardrails using Gemini Flash Lite as a screening model, sandboxed code execution, full tracing, and VPC Service Controls. ADK plugins enforce global callbacks like after_tool_callback to short-circuit poisoned responses across all agents.