Wu Shixiong's Large Model Academy

Mar 27, 2026 · Artificial Intelligence

Securing RAG Systems: A Three‑Layer Permission Framework for Banking AI

This article explains why vector databases lack row‑level security, presents a three‑layer permission architecture—including JWT authentication, Milvus metadata or partition filtering, and post‑retrieval validation—covers document security levels, PostgreSQL RLS, audit logging, caching strategies, and offers interview‑ready talking points.