Yuntao Du (杜云滔)

AI Security & Data Privacy

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I am a PhD candidate in computer science at Purdue University, advised by Prof. Ninghui Li. Here is my CV (updated May 20, 2026).

I study security and privacy risks in machine learning and LLM agents, from both adversarial and defensive perspectives. My current research focuses on:

  • AI Security and Privacy. (1) Uncovering emerging privacy threats posed by LLM misuse (ACL’26, Data Eng. Bulletin’25); (2) Building practical data-use detection methods to support the responsible use of training data in LLMs.
  • Data Privacy in Machine Learning. (1) Designing principled membership inference attacks to assess information leakage in ML models (NDSS’26, USENIX Security’26); (2) Auditing privacy risks of LLMs (USENIX Security’26 [1], [2]; ICLR’26);
  • Differentially Private Data Synthesis. Developing practical data synthesis algorithms with provable privacy guarantees for various types of sensitive data (CCS’25, VLDB’23).

My research has been recognized and supported by the Ross Fellowship (2023-2027), Presidential Doctoral Excellence Award (2023-2027), and Herbold Scholarship (2023-2024).

News

Apr 7, 2026 One paper on automated profile inference with LLM Agents has been accepted to ACL 2026.
Jan 27, 2026 Three of papers on membership inference, focusing on new shadow training paradigm, LLM tokenization, and LLM fine-tuning, have been accepted to USENIX Security 2026.
Sep 9, 2025 We present a comprehensive study on the emerging privacy risks of LLMs beyond data privacy, which has been published at Bulletin of the Technical Committee on Data Engineering.

Selected Publications

  1. ACL
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    Automated Profile Inference with Language Model Agents
    Yuntao Du, Zitao Li, Bolin Ding, Yaliang Li, Hanshen Xiao, Jingren Zhou, and Ninghui Li
    In Findings of the Association for Computational Linguistics (ACL), 2026
  2. USENIX Security
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    Imitative Membership Inference Attack
    Yuntao Du, Yuetian Chen, Hanshen Xiao, Bruno Ribeiro, and Ninghui Li
    In USENIX Security Symposium (USENIX Security), 2026
  3. NDSS
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    Cascading and Proxy Membership Inference Attacks
    Yuntao Du, Jiacheng Li, Yuetian Chen, Kaiyuan Zhang, Zhizhen Yuan, Hanshen Xiao, Bruno Ribeiro, and Ninghui Li
    In Network and Distributed System Security Symposium (NDSS), 2026
  4. CCS
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    Systematic Assessment of Tabular Data Synthesis
    Yuntao Du, and Ninghui Li
    In ACM Conference on Computer and Communications Security (CCS), 2025
  5. Data Eng. Bulletin
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    Beyond Data Privacy: New Privacy Risks for Large Language Models
    Yuntao Du, Zitao Li, Ninghui Li, and Bolin Ding
    IEEE Data Engineering Bulletin, 2025

Selected Honors & Awards

• National Winner (Purdue Team Lead), Innovation Bowl, 2026. Covered by Purdue CS, Radiance
NDSS Fellowship, Internet Society (1 of 24 worldwide), 2026
Ross Fellowship, Purdue University, 2023
Herbold Scholarship, Purdue University (1 of 7), 2023
Presidential Doctoral Excellence Award, Purdue University (1 of 150), 2023
• Excellent Masters Dissertation, China, 2023
• Provincial Outstanding Graduates, Zhejiang, China, 2023
• National Scholarship, China (0.1%), 2021-2022

Recent Professional Services

Conference Reviewer
• ACM ASIA Conference on Computer and Communications Security (AsiaCCS)
• IEEE Symposium on Security and Privacy (S&P), Poster Track
• Neural Information Processing Systems (NeurIPS)
• International Conference on Learning Representations (ICLR)
• International Conference on Artificial Intelligence and Statistics (AISTATS)
• International Conference on Very Large Data Bases (VLDB)
• ACM Web Conference (WWW)
• The AAAI Conference on Artificial Intelligence (AAAI)
• ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR)
• ACM Conference on Data and Application Security and Privacy (CODASPY)
• International Conference on Web Search and Data Mining (WSDM)
• ACM Conference on Information and Knowledge Management (CIKM)
Journal Reviewer
• ACM Computing Surveys (CSUR)
• IEEE Transactions on Dependable and Secure Computing (TDSC)
• ACM Transactions on Privacy and Security (TOPS)
• International Journal on Very Large Data Bases (VLDBJ)
• IEEE Transactions on Knowledge and Data Engineering (TKDE)
• ACM Transactions on Recommender Systems (TORS)
• IEEE Transactions on Big Data (TBD)