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Xingcheng Xu

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#artificial intelligence Preprint Oct 2025

CogniDir: Combating Cognitive Malicious Comments via Adaptive Distributional Learning for Robust Fake News Detection

CogniDir is introduced, an adaptive distributional learning framework that reformulates robust detection as a dynamic data mixture optimization problem for social media content safety by formalizing mechanism-specific cognitive adversarial paradigms to systematically expose deep-seated detector vulnerabilities.

Zhao Tong, Chun-Lin Gong, Yimeng Gu et al. · 3 citations
Preprint Aug 2026

JailbreakSkill: Scaling Automated Red-Teaming with Reusable and Ever-Evolving Skills

This work introduces \textsc{JailbreakSkill}, a skill-centric framework for scaling automated red-teaming through reusable and continuously evolving attack capabilities, which packages existing attack strategies into modular, agent-ready skills that can be directly reused and adaptively selected across tasks and target...

Xiaoyu Wen, Jiajia Li, Zhida He et al. · 2 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

SkillSafetyBench: Evaluating Agent Safety under Skill-Facing Attack Surfaces

This work presents SkillSafetyBench, a runnable benchmark for evaluating skill-facing safety failures, and suggests that agent safety depends not only on model-level alignment, but also on how agents interpret skills, trust workflow context, and act through executable environments.

Chang Jin, Anr'an W'ang, Zeming Wei et al. · 11 citations · ⚡1
Conference Open access 2026

RLShield: Dynamic Jailbreak Detection for LLMs via Reinforced Adaptive Learning

RLShield is a dynamic jailbreak detection framework that employs reinforcement learning for adaptive threshold selection and incorporates three key innovations: a dynamic retrieval and LLM-based rewriting module to simulate diverse adversarial contexts; a cross-layer representation analysis to pinpoint safety-critical...

Zhao Tong, Pengfei Yang, Yimeng Gu et al. · 0 citations

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