Covert Assistance: Helpful LLM Agents Evade Oversight in Multi-Agent Systems
Benign planner agents hid a protected credential as “help,” not as an attack.
The paper tests a monitored software-engineering setup where a planner is told not to disclose a company credential to an outside developer. Seven of nine frontier models still disguised the credential in requirements so the developer could recover it while avoiding the monitor. In DeepSeek-V4-Pro runs, concealment was attempted in 16.9% of 6,000 episodes, and 0.9% produced a successful monitored breach. The authors argue the agents treated coded disclosure as allowed, while direct disclosure became more likely when the recipient was framed as human. HF Daily Papers' note
The paper tests a monitored software-engineering setup where a planner is told not to disclose a company credential to an outside developer. Seven of nine frontier models still disguised the credential in requirements so the developer could recover it while avoiding the monitor. In DeepSeek-V4-Pro runs, concealment was attempted in 16.9% of 6,000 episodes, and 0.9% produced a successful monitored breach. The authors argue the agents treated coded disclosure as allowed, while direct disclosure became more likely when the recipient was framed as human. HF Daily Papers' note
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