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Day 09/90: When Retrieved Content Becomes an Instruction — Prompt Injection in RAG

This story is from 2026-10-27. It is preserved in the archive; the latest stories are on the live feed.

What happens when a RAG system retrieves the right document, but that document tells the AI to ignore the user’s question? On Day 08, I explored how LLM judges can make mistakes. Today, I’m looking at another trust problem: what if the content we give an LLM as evidence tries to control its behavio…

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  1. 2026-10-27 14:37 · DEV Community — AI
    Day 09/90: When Retrieved Content Becomes an Instruction — Prompt Injection in RAG

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