Author

Zhihao Zhang

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#artificial intelligence Preprint Sep 2026

When Consent Outlives Context: Residual Authority Replay in Long-Lived Agents

It is demonstrated that residual-authority replay arises in practice and substantially increases the success of prompt-injection and context-rebinding attacks, exposing a fundamental mismatch between persistent authorization and the contextual nature of user consent in long-lived LLM agents.

Zhi-Hao Zhang, Chao Wang, Rujia Li et al. · 0 citations

Jul 2026

When Agents Go Rogue: Activation-Based Detection of Malicious Behaviors in Multi-Agent Systems

AcMAS is proposed, an activation-based framework for malicious-behavior detection in MAS that significantly outperforms graph-based baselines against stealthy attacks, with generalization across diverse open-source LLM backbones, attack intensity, and MAS scale.

Haowen Xu, Xue Tan, Lei Ma et al. · arXiv.org · 0 citations