# AI Agents Can Have Undetectable Private Conversations. The Audit Log Cant Help.

- slug: ai-agents-can-have-undetectable-private-conversations-the-audit-log-cant-help
- date: 2026-04-07
- category: Agentics

Short AI outputs — tool calls, yes-no answers, confirmations — now carry enough hidden-signal capacity for two colluding agents to exchange a secret key through their visible transcript. MIT and Tel Aviv cryptographers proved it. The audit log shows nothing.

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