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ToolFence: Fine-Grained Authorization for Secure Tool-Using LLM Agents

Li, Yanjie et al.
arXiv (All) · Papers
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cryptography-and-security
Tool-using LLM agents remain vulnerable to indirect prompt injection because trusted instructions and untrusted observations share one context, allowing malicious content to steer consequential input-filtering defenses. Multi-path consensus defenses still leave a high attack success rate because the
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