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Xia Hu

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#natural language process... Preprint Oct 2026

Before Agent Tells The Lie: Has Deception Already Been Represented?

Large language model (LLM)-based agents can exhibit deceptive behavior during task execution, including hiding failures, fabricating results, or falsely signaling task completion. Existing monitoring approaches mainly detect deception after it appears in observable actions or outputs. In this paper, we investigate whet...

Xin-Ling Li, Da-Di Guo, Qing-Yu Liu et al. · 0 citations
Review Aug 2026

Graph Engineering in the Era of LLM Agents: From Individual Intelligence to System Intelligence

Graph Engineering is introduced, an emerging paradigm for next-generation agent systems that provides a unified foundation for organizing complex objectives, orchestrating heterogeneous agents, modeling system dynamics, and enabling scalable agent evolution.

Yuyuan Feng, Zhi-Shang Xiang, Chao Yang et al. · 4 citations
Jul 2026

Agent Skills Matter: Inferring Proprietary Skills from Execution Trajectories

These results show that benign execution trajectories can expose proprietary procedural knowledge, and SigLeak, a black-box framework that exploits recurring skill signatures in agent behavior, outperforms or matches three baselines in nearly every setting.

Jianing Geng, Ruiqi He, Zekun Fei et al. · 3 citations
Jul 2026

Do LLMs Know Their Vulnerable Scenarios?

This work shows that scenario-wrapped prompts activate internal scenario directions whose causal steering consistently reduces refusal scores, and proposes Concept2Scenario, a concept-based attribution framework for vulnerable scenario discovery that instantiates a broad concept space with a sparse autoencoder, transla...

Ziheng Peng, Huiqi Deng, Haoran Jing et al. · 0 citations
Review Aug 2026

ClawSentry: A Progressive Multi-Tier Security Monitor for Safeguarding Autonomous LLM Agents

This work argues that agentic risk is progressive: it can enter at four loci of the agent control loop--skill admission, invocation-time intent, execution-time effect, and post-action consequence--while a denied dangerous objective can reappear across surface forms, tools, or turns.

Kai Wang, Zeming Wei, Biaojie Zeng et al. · 0 citations
Preprint Aug 2026

$A^2E$ : An End-to-End Agent Auditing Engine

Experiments conducted with A^2E (Agent Auditing Engine) reveal that model-harness combinations exhibit substantial performance variation across different types of tasks, and that no single combination consistently outperforms all others across every task.

Haoning Wang, Mingxun Zhang, Chenyue Yu et al. · 0 citations

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