Author

Haoxuan Xu

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Preprint Aug 2026

Behavioral Skill Reconstruction: Reconstructing Hidden Functionality from LLM Agent Skills

SkillClone is introduced, a black-box attack that clones a target skill by forming an interface hypothesis from its public advertisement, issuing structured benign probes, synthesizing an executable replica, and iteratively repairing it through differential validation against the victim skill.

Peichun Hua, Haoxuan Xu, Meng-Yuan Li · 2 citations

Preprint Aug 2026

Hiding Directions, Leaking Structure: Breaking ArrowCloak through Low-Rank Structure

This paper revisits ArrowCloak from cryptographic and structural perspectives and proposes an end-to-end, query-free recovery attack, suggesting that lightweight protection should address both per-vector geometry and joint structure across released weights.

Beijie Liu, Junyi Ouyang, Haoxuan Xu et al. · 1 citation