Hanzhou Wu
I am seeking motivated Ph.D. candidates. Feel Free to contact me.
Curriculum Vitae · Google Scholar // h.wu.phd (at) ieee.org or hanzhou (at) shu.edu.cn
Research Interests: AI Security, LLM Security, Multimedia Security, Multimedia Forensics, and Signal Processing.
Occupation
- Associate Professor, Shanghai University, Shanghai, China, 2021 -
- Adjunct Professor, Guizhou Normal University, Guiyang, China, 2025 -
- Assistant Professor, Shanghai University, Shanghai, China, 2019 - 2021.
- Research Scientist, Institute of Automation, Chinese Academy of Sciences, Beijing, China, 2017 - 2019.
- Visiting Scholar, New Jersey Institute of Technology, New Jersey, USA, 2014 - 2016.
- Ph.D., Information Security, Southwest Jiaotong University, Chengdu, China, 2011 - 2017.
- B.Sc., Information Security, with Mao Yisheng Honors Class, Southwest Jiaotong University, Chengdu, China, 2007 - 2011.
Book Chapters
- Unsupervised steganographer identification via clustering and outlier detection, Digital Media Steganography, Elsevier, 2020.
- Recent advances in reversible watermarking in an encrypted domain, Advanced Security Solutions for Multimedia, IOP Science, 2021.
- Graph models in information hiding, Recent Applications in Graph Theory, IntechOpen, 2021.
- Linguistic steganography and linguistic steganalysis, Adversarial Multimedia Forensics, Springer, 2024.
Selected Preprints
Selected Publications
- Structural design of convolutional neural networks for steganalysis, IEEE Signal Processing Letters, 2016.
- Ensemble of CNNs for steganalysis: an empirical study, ACM Workshop on Information Hiding and Multimedia Security, 2016.
- PPE-based reversible data hiding, ACM Workshop on Information Hiding and Multimedia Security, 2016.
- Dynamic content selection-and-prediction framework applied to reversible data hiding, IEEE International Workshop on Information Forensics and Security, 2016.
- Separable reversible data hiding for encrypted palette images with color partitioning and flipping verification, IEEE Transactions on Circuits and Systems for Video Technology, 2017.
- New graph-theoretic approach to social steganography, IS&T Electronic Imaging, Media Watermarking, Security, and Forensics, 2019.
- Reducing invertible embedding distortion using graph matching model, IS&T Electronic Imaging, Media Watermarking, Security, and Forensics, 2020.
- Watermarking in deep neural networks via error back-propagation, IS&T Electronic Imaging, Media Watermarking, Security, and Forensics, 2020.
- Generative text steganography based on LSTM network and attention mechanism with keywords, IS&T Electronic Imaging, Media Watermarking, Security, and Forensics, 2020.
- Linguistic steganalysis with graph neural networks, IEEE Signal Processing Letters, 2021.
- Watermarking neural networks with watermarked images, IEEE Transactions on Circuits and Systems for Video Technology, 2021.
- Structural watermarking to deep neural networks via network channel pruning, IEEE International Workshop on Information Forensics and Security, 2021.
- ALiSa: Acrostic linguistic steganography based on BERT and Gibbs sampling, IEEE Signal Processing Letters, 2022. Code
- Hiding data hiding, Pattern Recognition Letters, 2023.
- A fast method for robust video watermarking based on Zernike moments, IEEE Transactions on Circuits and Systems for Video Technology, 2023.
- Prompting steganography: a new paradigm, IS&T Electronic Imaging, Media Watermarking, Security, and Forensics, 2024. Slides
- Semantic-preserving linguistic steganography by pivot translation and semantic-aware bins coding, IEEE Transactions on Dependable and Secure Computing, 2024. Code by Tianyu Yang
- Robust and imperceptible black-box DNN watermarking based on Fourier perturbation analysis and frequency sensitivity clustering, IEEE Transactions on Dependable and Secure Computing, 2024.
- Suppressing high-frequency artifacts for generative model watermarking by anti-aliasing, ACM Workshop on Information Hiding and Multimedia Security, 2024. Slides
- Watermarking text documents with watermarked fonts, ACM Workshop on Information Hiding and Multimedia Security, 2024. Slides
- Automatic, robust and blind video watermarking resisting camera recording, IEEE Transactions on Circuits and Systems for Video Technology, 2024.
- EDMC: Efficient multi-view clustering via cluster and instance space learning, IEEE Transactions on Multimedia, 2024.
- Transferable watermarking to self-supervised pre-trained graph encoders by trigger embeddings, IEEE International Workshop on Information Forensics and Security, 2024. Code & Slides by Xiangyu Zhao
- Unveiling hidden model fingerprints in API-protected LLMs, IS&T Electronic Imaging, Media Watermarking, Security, and Forensics, 2026. arXiv
- Defining cost function of steganography with large language models, IS&T Electronic Imaging, Media Watermarking, Security, and Forensics, 2026.
- Task migration resistant watermarking for natural language encoders, IS&T Electronic Imaging, Media Watermarking, Security, and Forensics, 2026.
- Rotation, scale, and translation resilient black-box fingerprinting for intellectual property protection of EaaS models, IEEE Transactions on Dependable and Secure Computing, 2026.
- ShadowCoT: Cognitive hijacking for stealthy reasoning backdoors in LLMs, IEEE Transactions on Information Forensics and Security, 2026. arXiv | Supplementary material
- Choose your lens: Multi-perspective value alignment of Chain-of-Thought reasoning, Findings of the Association for Computational Linguistics, 2026.
- Learning anchor in dual orthogonal space for fast multi-view clustering, IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2026.
- Robust black-box fingerprinting for large language models against composite attacks via LLM self-evaluation and ArcFace, ACM Workshop on Information Hiding and Multimedia Security, 2026.
- CREF: Concept response fingerprints for large language models, ACM Workshop on Information Hiding and Multimedia Security, 2026.
Selected Services and Activities
Selected Honors and Awards
- Editorial Contribution Award, Scientific Reports, 2026.
- World's Top 2% Scientists, Stanford University and Elsevier, 2025.
- CCF-Tencent Rhino-Bird Young Faculty Open Research Fund (as PI), Tencent Inc., 2022.
- Best Presentation Award (1st author), China Media Forensics and Security Workshop, 2021.
- Outstanding Paper Award (1st author), China Information Hiding Workshop, 2019.
- Shanghai Chenguang Scholar (as PI), Shanghai Municipal Education Commission, 2019.
- Silver Medal (as a contestant), 36th ACM-ICPC Asia Regional Programming Contest (Chengdu Site), 2011.
- Silver Medal (as a contestant), 36th ACM-ICPC Beijing Invitational Programming Contest (Beijing Site), 2011.
- Silver Medal (as a contestant), "Google Cup" ACM-ICPC Fudan Invitational Programming Contest (Shanghai Site), 2011.
- Bronze Medal (as a contestant), 35th ACM-ICPC Asia Regional Programming Contest (Hangzhou Site), 2010.
- Bronze Medal (as a contestant), 35th ACM-ICPC Asia Regional Programming Contest (Tianjin Site), 2010.
Alumni
- 2025: Weinan Zhu (M.Sc., Dissertation), Zhiguang Yang (M.Sc., Dissertation), Xingdong Ren (M.Sc., Dissertation), Jinghui Shi (M.Sc., Dissertation), Chenghua He (M.Sc., Dissertation), Lina Lin (M.Sc.), Yumeng Xie (B.Sc., Dissertation, Best Dissertation Award)
- 2024: Yazhou Zhang (M.Sc., Dissertation), Li Zhang (M.Sc., Dissertation), Chen Li (M.Sc., Dissertation), Xi Jin (M.Sc., Dissertation), Yong Liu (Ph.D.)
- 2023: Xiaoyan Zheng (M.Sc., Dissertation), Tianyu Yang (M.Sc., Dissertation), Shiyi Chen (M.Sc., Dissertation), Tianxing Zhang (M.Sc., Dissertation), Qiyun Liu (M.Sc., Dissertation)
- 2022: Biao Yi (M.Sc., Dissertation), Yumin Wang (M.Sc., Dissertation), Xiaoyu Zhang (B.Sc., Dissertation, Best Dissertation Award), Lina Lin (B.Sc., Best Dissertation Award)
Media
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