Haonan Shi

bio_pic.jpg

503 Olin, 2001–2017 Martin Luther King Jr Dr

Cleveland, OH 44106

United States

I am a third-year Ph.D. candidate at Case Western Reserve University, advised by Prof. An Wang and co-advised by Dr. Tu Ouyang. My research focuses on Large Language Model Safety and Machine Learning Privacy. Prior to this, I received my bachelor’s degree from South China University of Technology, where I conducted research on privacy under the supervision of Prof. Hongyun Xu.

I am passionate about applying my research to real-world problems and look forward to internship opportunities and research collaborations.

Email: haonan.shi3[AT]case.edu(please replace “[AT]” by “@”)

research interests

My research lies at the intersection of Large Language Model Safety and Machine Learning Privacy. Specifically, the focus areas include:

Large Language Model Safety:

  • Exploring post-training alignment for adaptive safety reasoning in LLMs, defending against jailbreaks while preserving inference efficiency and performance [AAAI].

Machine Learning Privacy:

  • Exploring effective and efficient methods to detect privacy vulnerabilities in machine learning models/systems via membership inference attacks [EuroS&P, PoPETs].
  • Exploring privacy-preserving fine-tuning approaches for Large Language Models [WWW, ICLR].

news

selected publications

  1. EASE: Practical and Efficient Safety Alignment for Small Language Models
    Haonan Shi, Guoli Wang, Tu Ouyang, and 1 more author
    In The 40th Annual AAAI Conference on Artificial Intelligence (AAAI)(oral), 2026
  2. Learning-Based Difficulty Calibration for Enhanced Membership Inference Attacks
    Haonan Shi, Tu Ouyang, and An Wang
    In IEEE 9th European Symposium on Security and Privacy (EuroS&P), 2024
  3. WWW
    GuardedTuning.png
    Navigating the Designs of Privacy-Preserving Fine-tuning for Large Language Models
    Haonan Shi, Tu Ouyang, and An Wang
    In International World Wide Web Conference (WWW), 2025
  4. Unveiling Client Privacy Leakage from Public Dataset Usage in Federated Distillation
    Haonan Shi, Tu Ouyang, and An Wang
    In Proceedings on Privacy Enhancing Technologies Symposium (PoPETs), 2025