The 10-Layer Security System Your RAG Pipeline Is Missing

Your RAG pipeline has a front door and a back door. Both are wide open. The front door lets users inject prompts that override your system instructions. The back door lets the LLM hallucinate answers that sound authoritative but cite nothing. Between these two doors, credit card numbers flow through your logs, your embedding API, and your LLM provider - a GDPR violation waiting to happen. This article covers the 10 security layers I implement in every production RAG system. 5 guard the input. 5 guard the output. Each one catches threats the others miss.