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MemCut tests if AI agents remove a secret when a user tells them to

After 10 more messages were removed, a reader got the secret from the remaining data at a rate of 39 to 76 percent.

Claimed, not confirmed

Researchers made MemCut, a test for AI agents that keep a long-term memory of user conversations. The test has 456 secrets that the authors made. It checks if an agent removes a secret when a user tells it to. The team tested 5 agent memory systems and 4 language models. No different group checked the result. If the message that tells the secret is removed, the usual retrieval loses much more than a reader that gets the remaining data.

Sources

  1. MemCut: Every Secret Leaves a Trail in the Long-Term Memory of LLM Agentsarxiv.org
AI MATTER · NEWS · AI MATTER · NEWS ·17 OCT2026

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