Prompt Injection: Defense in Depth

Dec 25, 20251 min read

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Category:AutomationAgents

Prompt Injection: Defense in Depth

Practical controls to reduce LLM prompt injection and tool misuse. Covers input validation, output enforcement, rate limiting, and layered guardrails for AI agents in production.

The real risk

The model follows instructions you didn’t intend.

Defense in depth

  • Treat tool calls as untrusted input
  • Validate and constrain actions server-side
  • Use allowlists + schemas
  • Log and review tool invocations

Keep it boring

The safest LLM feature behaves like a normal API with strict boundaries.

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Next step

Retry policies, backoff + jitter, runbooks, and correctness-first automation.

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