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RAG Security: Data Leakage and Prompt Injection (EXPLAINED)

Scenario BasedRAGHard25 min read

Hard RAG interview question on rag security: data leakage and prompt injection — architecture, trade-offs, eval, and production patterns.

TL;DR — Quick Answer

Enforce ACL filters at retrieval; treat ingested docs and retrieved text as untrusted input; detect exfiltration prompts; separate system and user channels. Hidden instructions in documents can hijack model behavior — sanitize and monitor.

The Interview Question

Explain rag security: data leakage and prompt injection. How would you design, implement, and evaluate this in a production RAG system? Discuss trade-offs and failure modes.

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