Education

  • 2020.09 - 2024.06, Bachelor of Engineering in Electronics and Communication Engineering, Sun Yat-sen University (SYSU)
  • 2024.09 - Present, Ph.D. student, The Hong Kong Polytechnic University

Recent News

  • May 2026 Two papers are accepted to ICML 2026.
  • Apr. 2026 Our paper is accepted to ACL 2026 (Findings).
  • Aug. 2025 Our paper is accepted to EMNLP 2025 (Main Conference).

Publications

Agent SecurityMachine Unlearning

First & Co-First Author

  • SINGED framework for auditing safe execution in LLM agents

    SINGED: Correct Outputs Do Not Certify Safe Execution in LLM Agents

    Xiaoyu Xu†, Zi Liang†, Minxin Du, Qipeng Xie, Qingqing Ye, Yuyuan Li, Haibo Hu

    arXiv 2026 · †Equal contribution (Paper) (Code) (Demo)

  • CAITLYN methodology overview

    CAITLYN: Can LLM Agents Autonomously Synthesize Defenses against Emerging Injection Attacks?

    Zi Liang†, Xiaoyu Xu†, Yanyun Wang, Minxin Du, Qingqing Ye, Haibo Hu

    arXiv 2026 · †Equal contribution (Paper) (Code) (Demo)

  • Overview of machine unlearning across LLM system scopes

    Machine Unlearning for Large Language Models: Foundations, Advances, and Agentic Extensions

    Xiaoyu Xu, Minxin Du, Li Bai, Junxu Liu, Yaxin Xiao, Kun Fang, Liu Yang, Huadi Zheng, Peizhao Hu, Qingqing Ye, Haibo Hu

    Survey · arXiv 2026 (Paper)

  • Overview figure for routine chat state poisoning

    When Routine Chats Turn Toxic: Unintended Long-Term State Poisoning in Personalized Agents

    Xiaoyu Xu, Minxin Du, Qipeng Xie, Haobin Ke, Qingqing Ye, Haibo Hu

    arXiv 2026 (Paper) (Code) (Demo)

  • Overview figure for FIT to Forget

    FIT to Forget: Robust Continual Unlearning for Large Language Models

    Xiaoyu Xu, Minxin Du, Kun Fang, Yaxin Xiao, Zhicong Huang, Cheng Hong, Qingqing Ye, Haibo Hu

    arXiv 2026 (Paper) (Code)

  • Overview figure for dual-granularity data synthesis

    From Domains to Instances: Dual-Granularity Data Synthesis for LLM Unlearning

    Xiaoyu Xu, Minxin Du, Zitong Li, Zi Liang, Zhibiao Guo, Shiyu Zhang, Peizhao Hu, Qingqing Ye, Haibo Hu

    ACL 2026 Findings (Paper) (Code)

  • Overview figure for reversibility of machine unlearning

    Unlearning Isn't Deletion: Investigating Reversibility of Machine Unlearning in LLMs

    Xiaoyu Xu, Xiang Yue, Yang Liu, Qingqing Ye, Huadi Zheng, Peizhao Hu, Minxin Du, Haibo Hu

    ICML 2026 (Paper) (Code)

  • Overview figure for OBLIVIATE

    OBLIVIATE: Robust and Practical Machine Unlearning for Large Language Models

    Xiaoyu Xu, Minxin Du, Qingqing Ye, Haibo Hu

    EMNLP 2025 (Paper) (Code)

Coauthor

  • Overview figure for reasoning transferability

    Does Math Reasoning Improve General LLM Capabilities? Understanding Transferability of LLM Reasoning

    Maggie Huan, Yuetai Li, Tuney Zheng, Xiaoyu Xu, Seungone Kim, Minxin Du, Radha Poovendran, Graham Neubig, Xiang Yue

    ICML 2026 (Paper) (Code)