MemLineage: Lineage-Guided Enforcement for LLM Agent Memory
We introduce MemLineage, a defense for LLM agent memory that attaches both cryptographic provenance and LLM-mediated derivation lineage to every entry. Recent and concurrent work shows that untrusted content can be written into persistent agent state and re-enter later sessions as an instruction; the remaining systems question is how to preserve useful memory recall while preventing such state from justifying sensitive actions. MemLineage treats this as a chain-of-custody problem rather than a filtering problem. It is a six-module design around an RFC-6962 Merkle log over per-principal Ed25519-signed entries: a weighted derivation DAG records which retrieved entries influenced each new me...
| Authors | Ciyan Ouyang, Rui Hou |
|---|---|
| Primary category | cs.CR |
| Published | 14 May 2026 |
| Last updated at source | 14 May 2026 |
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