collaborators

10 papers

cs.SE2026

Ecdysis: Efficient and Effective Training of Runtime Harnesses for LLM Agents

Ruiqing Yue, Yu Cui, Zhuoyu Sun +11

Self-evolving runtime harnesses can substantially improve the capabilities of large language model (LLM) agents and provide a promising paradigm for optimizing agent execution. Exi…

cs.CR2026

Agent Harness Distillation: Inference-Time Harness Extraction and Exploitation in Autonomous Multi-Agent Systems

Yu Cui, Wuli Yang, Yirui Shi +4

Autonomous multi-agent systems (AMAS) built on large language models (LLMs), such as Hermes, increasingly rely on inference-time harnesses to coordinate reasoning and action. Const…

cs.CR2026

Refusal is Not Safety! Benchmarking Latent Safety Risks of LLM-Driven Content Humorization

Yu Cui, Ruiqing Yue, Tingyu Li +6

Safety defenses for large language models (LLMs) have been extensively studied, with existing approaches focusing on attack detection and refusal mechanisms. Such fixed-form direct…

cs.CR2026

Spore: Efficient and Training-Free Privacy Extraction Attack on LLMs via Inference-Time Hybrid Probing

Yu Cui, Ruiqing Yue, Hang Fu +6

With the wide adoption of personal AI assistants such as OpenClaw, privacy leakage in user interaction contexts with large language model (LLM) agents has become a critical issue.…

cs.CR2025

Towards Provably Secure Generative AI: Reliable Consensus Sampling

Yu Cui, Hang Fu, Sicheng Pan +9

Existing research on generative AI security is primarily driven by mutually reinforcing attack and defense methodologies grounded in empirical experience. This dynamic frequently g…

cs.CR2025

Can LLMs Threaten Human Survival? Benchmarking Potential Existential Threats from LLMs via Prefix Completion

Yu Cui, Yifei Liu, Hang Fu +4

Research on the safety evaluation of large language models (LLMs) has become extensive, driven by jailbreak studies that elicit unsafe responses. Such response involves information…

cs.CR2025

VortexPIA: Indirect Prompt Injection Attack against LLMs for Efficient Extraction of User Privacy

Yu Cui, Sicheng Pan, Yifei Liu +2

Large language models (LLMs) have been widely deployed in Conversational AIs (CAIs), while exposing privacy and security threats. Recent research shows that LLM-based CAIs can be m…

cs.AI2025

Free-MAD: Consensus-Free Multi-Agent Debate

Yu Cui, Hang Fu, Haibin Zhang +2

Multi-agent debate (MAD) is an emerging approach to improving the reasoning capabilities of large language models (LLMs). Existing MAD methods rely on multiple rounds of interactio…

cs.CL2025

RRTL: Red Teaming Reasoning Large Language Models in Tool Learning

Yifei Liu, Yu Cui, Haibin Zhang

While tool learning significantly enhances the capabilities of large language models (LLMs), it also introduces substantial security risks. Prior research has revealed various vuln…

cs.CR2025

Ramp Up NTT in Record Time using GPU-Accelerated Algorithms and LLM-based Code Generation

Yu Cui, Hang Fu, Licheng Wang +1

Homomorphic encryption (HE) is a core building block in privacy-preserving machine learning (PPML), but HE is also widely known as its efficiency bottleneck. Therefore, many GPU-ac…