Author

Jun Sun

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#artificial intelligence Preprint Sep 2026

Representation Transitions Reveal Emerging Safety Risks in Multi-Turn LLM Agents

Multi-turn attacks on agentic systems can compose individually permissible actions into harmful outcomes, challenging defenses that assess actions or states in isolation. We show that such attacks leave a detectable signature in the agent's internal representations: harmful behavior emerges as an accumulated representa...

Hao-Yu Wang, Wei Zhao, Ye-Di Zhang et al. · 0 citations

Preprint Aug 2026

$S^3$: Improving Agent Safety through Multi-Stage Defense

An automated transformation pipeline that converts existing safety designs into reusable safety skills and establish a community-driven safety skill library is developed and results demonstrate the potential of stage-specific safety skills as a scalable and composable foundation for building resilient and trustworthy a...

Zi-Bo Xiao, Hao-Yu Wang, Jun Sun · 0 citations