Technical Guide

RAG source trust scoring for enterprise knowledge assistants

How to decide which sources should be retrieved, trusted, summarized, or blocked.

Technical Guide8 min readSecurity Engineering, AI Product Teams

Not All Sources Are Equal

Enterprise repositories contain approved policy, drafts, outdated content, confidential material, and user-generated text. Retrieval should account for source trust, freshness, ownership, and access control.

Trust Inputs

Useful scoring inputs include repository, document owner, label, age, access policy, historical abuse, content type, and whether the source can contain untrusted user instructions.

Runtime Decisions

Low-trust sources may be excluded, summarized with caution, inspected more deeply, or prevented from influencing tool actions. The decision should be logged for tuning.

Governance Loop

RAG security improves when findings feed source cleanup, permission fixes, label improvements, and red team retesting.

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