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SilentCall: Hidden Tool-Call Backdoors in Open-Weight Agents, and How to Catch Them

Pallakonda, Bhanu et al.
arXiv (All) · Papers
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cryptography-and-security
Open-weight tool-calling agents are adopted on evidence of merit, usually benchmark scores and a record of reliable use. We show that a model publisher can train an agent that earns both while concealing malicious behavior. Fine-tuned on a mixture of clean and poisoned conversations, our agents answ
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