activity
20222026
most citedSilent Guardian: Protecting Text from Malicious Exploitation by Large Language Models

12 citations · 101 across the 80 of their papers we have counts for

collaborators

86 papers

cs.LG2026

LoOPSD: On-Policy Self-Distillation with Looped Teachers

Wei Fan, Qingyue Yang, Chao-Hong Tan +6

On-policy self-distillation improves a model using guidance from the model itself, but it still requires a teacher that provides more useful predictions than the student. Existing…

cs.CL2026

Understanding and Mitigating Hallucination Escape in Tool-Using LLM Agents

Peigui Qi, Kunsheng Tang, Yide Song +2

Large language models (LLMs) increasingly serve as autonomous agents that invoke external tools. However, this capability introduces tool hallucination, selecting incorrect tools o…

cs.CL2026

GlitchPatch: Repairing Glitch Tokens in Frozen Language Models via Local Retokenization

Kunsheng Tang, Peigui Qi, Yide Song +3

Glitch tokens are anomalous vocabulary entries that can cause large language models (LLMs) to produce outputs inconsistent with their inputs. Existing repair methods require access…

cs.CR2026

The Safeguard Worked. Is the LLM System Safer?

Pingyu Wu, Weiming Zhang, Nenghai Yu

Safeguards in deployed LLM services are evaluated by refusal, attack success, and policy violation rates. Those rates characterize how a control performed on the requests it was te…

cs.CR2026

PURA: Provably Unbiased and Robust Multi-Bit Watermarking for AI-Generated Text Attribution

Yaofei Wang, Jinyang Guo, Shuchao Du +6

Fine-grained attribution of AI-generated text is becoming increasingly important for accountability and auditing, yet existing multi-bit watermarking methods still struggle to simu…

cs.CR2026

Breadcrumbing Search Agents

Xuebin Li, Hanqing Zhao, Siyuan Liang +4

LLM-based search agents are widely used for information-seeking tasks, but their reliance on external tool returns introduces a critical security risk: web content retrieved during…

cs.CR2026

Safeguards Based on Copyable Context Cannot Provide Reliable Safety for LLMs

Pingyu Wu, Lingyao Zhu, Weiming Zhang +1

Large language model safeguards decide whether to answer before seeing how an answer will be used. This creates a basic problem for dual-use tasks: the same answer can help an auth…

cs.CR2026

FARI: Robust One-Step Inversion for Watermarking in Diffusion Models

Jindong Yang, Han Fang, Weiming Zhang +2

Inversion-based watermarking is a promising approach to authenticate diffusion-generated images, yet practical use is bottlenecked by inversion that is both slow and error-prone. W…

cs.CV2026

DNA: Dual-stage Native Attribution for Generated Image Source Tracing

Chao Wang, Kejiang Chen, Zijin Yang +4

The rapid evolution of image generation has produced numerous within-family variants, making source-model attribution of suspect images increasingly important for digital forensics…

eess.AS2026

BareWave: Waveform-Native Flow-Matching Text-to-Speech

Wei Fan, Chao-Hong Tan, Qian Chen +5

Removing intermediate representations and separately trained decoding stages has become an important direction in generative modeling. In text-to-speech, however, high-quality syst…

cs.CV2026

TextFake: Benchmarking AI-Generated Image Detection on Text-Rich Images

Yuning Zhang, Changtao Miao, Mingyu Liao +5

Recent AI-generated image (AIGI) detectors perform well on natural-image benchmarks, but their behavior on text-rich forgeries, such as fabricated screenshots, documents, and news…

cs.AI2026

Provably Secure Agent Guardrail

Benlong Wu, Weiming Zhang, Kejiang Chen +2

As large language models transition from bounded generative engines to agents with expansive execution privileges, AI going out of control precipitates a fundamental crisis in arti…

cs.LG2026

VLMShield: Efficient and Robust Defense of Vision-Language Models against Malicious Prompts

Peigui Qi, Kunsheng Tang, Yanpu Yu +7

Vision-Language Models (VLMs) face significant safety vulnerabilities from malicious prompt attacks due to weakened alignment during visual integration. Existing defenses suffer fr…

cs.CR2026

State-Dependent Safety Failures in Multi-Turn Language Model Interaction

Pengcheng Li, Jie Zhang, Tianwei Zhang +5

Safety alignment in large language models is typically evaluated under isolated queries, yet real-world use is inherently multi-turn. Although multi-turn jailbreaks are empirically…

cs.CV2026

WMVLM: Evaluating Diffusion Model Image Watermarking via Vision-Language Models

Zijin Yang, Yu Sun, Kejiang Chen +4

Digital watermarking is essential for securing generated images from diffusion models. Accurate watermark evaluation is critical for algorithm development, yet existing methods hav…

cs.CL2026

Character as a Latent Variable in Large Language Models: A Mechanistic Account of Emergent Misalignment and Conditional Safety Failures

Yanghao Su, Wenbo Zhou, Tianwei Zhang +4

Emergent Misalignment refers to a failure mode in which fine-tuning large language models (LLMs) on narrowly scoped data induces broadly misaligned behavior. Prior explanations mai…

cs.CR2026

SemBind: Binding Diffusion Watermarks to Semantics Against Black-Box Forgery Attacks

Xin Zhang, Zijin Yang, Kejiang Chen +3

Latent-based watermarks, integrated into the generation process of latent diffusion models (LDMs), simplify detection and attribution of generated images. However, recent black-box…

cs.CR2026

STEAD: Robust Provably Secure Linguistic Steganography with Diffusion Language Model

Yuang Qi, Na Zhao, Qiyi Yao +4

Recent provably secure linguistic steganography (PSLS) methods rely on mainstream autoregressive language models (ARMs) to address historically challenging tasks, that is, to disgu…

cs.SE2026

Cross-modal Retrieval Models for Stripped Binary Analysis

Guoqiang Chen, Lingyun Ying, Ziyang Song +7

Retrieving binary code via natural language queries is a pivotal capability for downstream tasks in the software security domain, such as vulnerability detection and malware analys…

cs.CV2025

LiteUpdate: A Lightweight Framework for Updating AI-Generated Image Detectors

Jiajie Lu, Zhenkan Fu, Na Zhao +4

The rapid progress of generative AI has led to the emergence of new generative models, while existing detection methods struggle to keep pace, resulting in significant degradation…

cs.CR2025

A high-capacity linguistic steganography based on entropy-driven rank-token mapping

Jun Jiang, Weiming Zhang, Nenghai Yu +1

Linguistic steganography enables covert communication through embedding secret messages into innocuous texts; however, current methods face critical limitations in payload capacity…

cs.CV2025

T2SMark: Balancing Robustness and Diversity in Noise-as-Watermark for Diffusion Models

Jindong Yang, Han Fang, Weiming Zhang +2

Diffusion models have advanced rapidly in recent years, producing high-fidelity images while raising concerns about intellectual property protection and the misuse of generative AI…

cs.CR2025

EditMark: Watermarking Large Language Models based on Model Editing

Shuai Li, Kejiang Chen, Jun Jiang +5

Large Language Models (LLMs) have demonstrated remarkable capabilities, but their training requires extensive data and computational resources, rendering them valuable digital asse…

cs.CR2025

SafeGuider: Robust and Practical Content Safety Control for Text-to-Image Models

Peigui Qi, Kunsheng Tang, Wenbo Zhou +5

Text-to-image models have shown remarkable capabilities in generating high-quality images from natural language descriptions. However, these models are highly vulnerable to adversa…