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Hanxi Guo

Ph.D. Student in Computer Science
Purdue University
West Lafayette, IN, USA
guo778 (at) purdue (dot) edu


Publications

(* represents equal contribution)

  1. 2026

  2. WACV
    Mitigating Backdoor Attacks via Trigger Reconstruction and Model Hardening
    Guanhong Tao, Siyuan Cheng, Guangyu Shen, Yingqi Liu, Shengwei An, Zhuo Zhang, Zhenting Wang, Hanxi Guo, Xiangyu Zhang
    The IEEE/CVF Winter Conference on Applications of Computer Vision (WACV), 2026.
    Coming Soon

  3. AAAI
    Poisoning with A Pill: Circumventing Detection in Federated Learning
    Hanxi Guo, Hao Wang, Tao Song, Tianhang Zheng, Yang Hua, Haibing Guan, Xiangyu Zhang
    Annual AAAI Conference on Artificial Intelligence (AAAI), 2026.
    Coming Soon

  4. 2025

  5. NeurIPS Workshop
    CodeMirage: A Multi-Lingual Benchmark for Detecting AI-Generated and Paraphrased Source Code from Production-Level LLMs
    Hanxi Guo, Siyuan Cheng, Kaiyuan Zhang, Guangyu Shen, Xiangyu Zhang
    NeurIPS 2025 Workshop on Deep Learning for Code in the Agentic Era (DL4C), 2025.
    PDF Dataset

  6. NeurIPS Workshop
    From Poisoned to Aware: Fostering Backdoor Self-Awareness in LLMs
    Guangyu Shen, Siyuan Cheng, Xiangzhe Xu, Yuan Zhou, Hanxi Guo, Zhuo Zhang, Xiangyu Zhang
    NeurIPS 2025 Workshop on Socially Responsible and Trustworthy Foundation Models (ResponsibleFM), 2025.
    PDF

  7. NeurIPS Workshop
    ASTRA: Autonomous Spatial-Temporal Red-teaming for AI Software Assistants
    Xiangzhe Xu*, Guangyu Shen*, Zian Su, Siyuan Cheng, Hanxi Guo, Lu Yan, Xuan Chen, Jiasheng Jiang, Xiaolong Jin, Chengpeng Wang, Zhuo Zhang, Xiangyu Zhang
    NeurIPS 2025 Workshop on Socially Responsible and Trustworthy Foundation Models (ResponsibleFM), 2025.
    PDF Code Page
    1st Place in Amazon Nova AI Challenge

  8. NeurIPS Workshop
    SHIELD: A Benchmark Study on Zero-Shot Detection of AI-Edited Images with Vision Language Models
    Siyuan Cheng, Hanxi Guo, Zhenting Wang, Xiangyu Zhang, Lingjuan Lyu
    NeurIPS 2025 Workshop on Generative and Protective AI for Content Creation (GenProCC), 2025.
    PDF Code

  9. EMNLP
    Profiler: Black-box AI-generated Text Origin Detection via Context-aware Inference Pattern Analysis
    Hanxi Guo, Siyuan Cheng, Xiaolong Jin, Zhuo Zhang, Guangyu Shen, Kaiyuan Zhang, Shengwei An, Guanhong Tao, Xiangyu Zhang
    Conference on Empirical Methods in Natural Language Processing (EMNLP), 2025.
    PDF Code

  10. ICCV
    JailbreakDiffBench: A Comprehensive Benchmark for Jailbreaking Diffusion Models
    Xiaolong Jin, Zixuan Weng, Hanxi Guo, Chenlong Yin, Siyuan Cheng, Guangyu Shen, Xiangyu Zhang
    International Conference on Computer Vision (ICCV), 2025.
    PDF

  11. USENIX Security
    SOFT: Selective Data Obfuscation for Protecting LLM Fine-tuning against Membership Inference Attacks
    Kaiyuan Zhang, Siyuan Cheng, Hanxi Guo, Yuetian Chen, Zian Su, Shengwei An, Yuntao Du, Charles Fleming, Ashish Kundu, Xiangyu Zhang, Ninghui Li
    USENIX Security Symposium, 2025.
    PDF Code

  12. S&P
    BAIT: Large Language Model Backdoor Scanning by Inverting Attack Target
    Guangyu Shen, Siyuan Cheng, Zhuo Zhang, Guanhong Tao, Kaiyuan Zhang, Hanxi Guo, Lu Yan, Xiaolong Jin, Shengwei An, Shiqing Ma, Xiangyu Zhang
    IEEE Symposium on Security and Privacy (S&P), 2025.
    PDF Code

  13. 2024

  14. NeurIPS
    BiScope: AI-generated Text Detection by Checking Memorization of Preceding Tokens
    Hanxi Guo, Siyuan Cheng, Xiaolong Jin, Zhuo Zhang, Kaiyuan Zhang, Guanhong Tao, Guangyu Shen, Xiangyu Zhang
    Conference on Neural Information Processing Systems (NeurIPS), 2024.
    PDF Code Dataset

  15. NeurIPS Workshop
    SkewAct: Red Teaming Large Language Models via Activation-Skewed Adversarial Prompt Optimization
    Hanxi Guo, Siyuan Cheng, Guanhong Tao, Guangyu Shen, Zhuo Zhang, Shengwei An, Kaiyuan Zhang, Xiangyu Zhang
    NeurIPS 2024 Workshop on Red Teaming GenAI: What Can We Learn from Adversaries?, 2024.
    PDF

  16. NeurIPS Workshop
    MultiVerse: Exposing Large Language Model Alignment Problems in Diverse Worlds
    Xiaolong Jin, Zhuo Zhang, Guangyu Shen, Hanxi Guo, Kaiyuan Zhang, Siyuan Cheng, Xiangyu Zhang
    NeurIPS 2024 Workshop on Safe Generative AI, 2024.
    PDF

  17. ECCV
    UNIT: Backdoor Mitigation via Automated Neural Distribution Tightening
    Siyuan Cheng*, Guangyu Shen*, Kaiyuan Zhang, Guanhong Tao, Shengwei An, Hanxi Guo, Shiqing Ma, Xiangyu Zhang
    European Conference on Computer Vision (ECCV), 2024.
    PDF Code

  18. TDSC
    Siren+: Robust Federated Learning with Proactive Alarming and Differential Privacy
    Hanxi Guo, Hao Wang, Tao Song, Yang Hua, Ruhui Ma, Xiulang Jin, Zhengui Xue, Haibing Guan
    IEEE Transactions on Dependable and Secure Computing (TDSC), 2024.
    PDF Code

  19. 2021

  20. SoCC
    Siren: Byzantine-robust Federated Learning via Proactive Alarming
    Hanxi Guo, Hao Wang, Tao Song, Yang Hua, Zhangcheng Lv, Xiulang Jin, Zhengui Xue, Ruhui Ma, Haibing Guan
    ACM Symposium on Cloud Computing (SoCC), 2021.
    PDF Code

  21. Network
    SpaceDML: Enabling Distributed Machine Learning in Space Information Networks
    Hanxi Guo, Qing Yang, Hao Wang, Yang Hua, Tao Song, Ruhui Ma, Haibing Guan
    IEEE Network, 2021.
    PDF


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