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Yun-Hao Feng

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#artificial intelligence Preprint Sep 2026

AdaGuard: An Adaptive Guard Model with User-defined Policies

This work proposes SafePO, a reinforcement learning algorithm for refining violation identification while balancing explanatory reasoning and final verdicts, and develops AdaGuard, a family of 0.6B, 4B, and 8B guard models that assess agent trajectories under policies supplied at inference time.

Yun-Hao Feng, Yi-Fan Ding, Yu-Xiang Xie et al. · 0 citations

AgentHazard: A Benchmark for Evaluating Harmful Behavior in Computer-Use Agents

The benchmark evaluates whether agents can recognize and interrupt harm arising from accumulated context, repeated tool use, intermediate actions, and dependencies across steps, and indicates that current systems remain highly vulnerable.

Yun-Hao Feng, Yifan Ding, Ying-Shui Tan et al. · 18 citations · ⚡1
#artificial intelligence Preprint Sep 2026

HazardAuditor: From Executable Threats to Safer Computer-Use Agents

HazardAuditor is introduced, an execution-grounded framework that runs heterogeneous agents in controlled environments and normalizes their interactions into a canonical event representation for cross-framework supervision, and observes that token-level post-training objectives create a structural mismatch for generati...

Yun-Hao Feng, Rui-Xiao Lin, Ming Wen et al. · 2 citations · ⚡1
Review Aug 2026

SkillTrace: Multi-Trace Provenance Auditing for LLM-Agent Skill Reuse

SKILLTRACE is presented, a multi-trace provenance auditing framework for LLM-agent skill reuse that represents the Operational Trace as a Skill Operational Graph (SOG) that captures activation, procedure, and resource-flow structure.

Jia-Luo Chen, Minghe Wang, Lingqi Jiang et al. · 0 citations

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