Zeyang Sha / 沙泽阳

2025

Single AI Agent Runtime Security Testing Standards

Ant Group; World Digital Technology Academy

Agent Safety Alignment via Reinforcement Learning

Zeyang Sha, Hanling Tian, Zhuoer Xu, Shiwen Cui, Changhua Meng, Weiqiang Wang; Arxiv

A Survey of LLM-Driven AI Agent Communication: Protocols, Security Risks, and Defense Countermeasures

Dezhang Kong, Shi Lin, Zhenhua Xu, Zhebo Wang, Minghao Li, Yufeng Li, Yilun Zhang, Zeyang Sha, Yuyuan Li, Changting Lin, Xun Wang, Xuan Liu, Muhammad Khurram Khan, Ningyu Zhang, Chaochao Chen, Meng Han; Arxiv

arxiv

SEM: Reinforcement Learning for Search-Efficient Large Language Models

Zeyang Sha, Shiwen Cui, Weiqiang Wang; Arxiv

arxiv

FragFake: A Dataset for Fine-Grained Detection of Edited Images with Vision Language Models

Zhen Sun, Ziyi Zhang, Zeren Luo, Zeyang Sha, Tianshuo Cong, Zheng Li, Shiwen Cui, Weiqiang Wang, Jiaheng Wei, Xinlei He, Qi Li, Qian Wang; Arxiv
arxiv

Thought Manipulation: External Thought Can Be Efficient for Large Reasoning Models

Yule Liu, Jingyi Zheng, Zhen Sun, Zifan Peng, Wenhan Dong, Zeyang Sha, Shiwen Cui, Weiqiang Wang, Xinlei He; Arxiv
arxiv

2024

Conversation Reconstruction Attack Against GPT Models

Junjie Chu, Zeyang Sha, Michael Backes, Yang Zhang; EMNLP 2024
arxiv code

ZeroFake: Zero-Shot Detection of Fake Images Generated and Edited by Text-to-Image Generation Models

Zeyang Sha, Yicong Tan, Mingjie Li, Michael Backes, Yang Zhang; CCS 2024

arxiv code

Games and Beyond: Analyzing the Bullet Chats of Esports Livestreaming

Yukun Jiang, Xinyue Shen, Rui Wen, Zeyang Sha, Junjie Chu, Yugeng Liu, Michael Backes, Yang Zhang; ICWSM 2024
arxiv

Prompt Stealing Attacks Against Large Language Models

Zeyang Sha, Yang Zhang; Arxiv

arxiv

Comprehensive Assessment of Toxicity in ChatGPT

Boyang Zhang, Xinyue Shen, Wai Man Si, Zeyang Sha, Zeyuan Chen, Ahmed Salem, Yun Shen, Michael Backes, Yang Zhang; Arxiv
arxiv

2023

DE-FAKE: Detection and Attribution of Fake Images Generated by Text-to-Image Generation Models

Zeyang Sha, Zheng Li, Ning Yu, Yang Zhang; CCS 2023

arxiv code Best paper finalist at CSAW Europe 2024

Can’t Steal? Cont-Steal! Contrastive Stealing Attacks Against Image Encoders

Zeyang Sha, Xinlei He, Ning Yu, Michael Backes, Yang Zhang; CVPR 2023

arxiv code

From Visual Prompt Learning to Zero-Shot Transfer: Mapping Is All You Need

Ziqing Yang, Zeyang Sha, Michael Backes, Yang Zhang; Arxiv

arxiv

2022

Fine-Tuning Is All You Need to Mitigate Backdoor Attacks

Zeyang Sha, Xinlei He, Pascal Berrang, Mathias Humbert, Yang Zhang; Arxiv

arxiv