Zesen Liu (刘泽森)

As of 27 September 2025
A photo of J. Doe

I am a first year Ph.D. student at the Department of Computer Science and Engineering, Hong Kong University of Science and Technology (HKUST), supervised by Prof. Dongdong She. Before coming to HKUST, I earned my bachelor’s degree at Xidian University.

I worked with with Prof. Xinlei He and Prof. Tianshuo Cong from 2023.10 to 2024.7.

I can be reached at zliuhi at cse dot ust dot hk, google scholar, github.

Publications

Have You Merged My Model? On The Robustness of Large Language Model IP Protection Methods Against Model Merging
Tianshuo Cong, Delong Ran, Zesen Liu, Xinlei He, Yichen Gong, Jinyuan Liu, Qi Li, Anyu Wang, and Xiaoyun Wang
The 1th ACM Workshop On Large AI Systems And Models With Privacy And Safety Analysis, co-located with CCS (CCS-LAMPS’24), Salt Lake City, USA. (Best paper award)
OBIR-tree: An Efficient Oblivious Index for Spatial Keyword Queries on Secure Enclaves
Zikai Ye, Xiangyu Wang, Zesen Liu, Dan Zhu, and Jianfeng Ma
ACM SIGMOD International Conference on Management of Data (SIGMOD’25)

Pre-prints

Exploit Tool Invocation Prompt for Tool Behavior Hijacking in LLM-Based Agentic System
Yuchong Xie, Mingyu Luo, Zesen Liu, Zhixiang Zhang, Kaikai Zhang, Yu Liu, Zongjie Li, Ping Chen, Shuai Wang, and Dongdong She
On Evaluating The Performance of Watermarked Machine-Generated Texts Under Adversarial Attacks
Zesen Liu, Tianshuo Cong, Xinlei He, and Qi Li

Honors and Awards

  • 2025.06 Overseas Study Scholarship in Xidian University
  • 2024.11 Gratitude to Chinese Modern Scientists Scholarship
  • 2024.10 National Scholarship
  • 2024.06 Qi'an Xin First Prize Scholarship
  • 2023.11 Third Prize of National Cryptography Competition

Experience

  • Research assistant, Tsinghua University & Hong Kong University of Science and Technology-Guangzhou, 2023.10-2024.7

Academic Service

  • Sub-Reviewer of FSE '25, Oakland'25, ARR May'25