Publications

Peer-reviewed

EchoGuard: Continuous Ultrasound-based Human Presence Verification Against AI Agents

Yizhu Wen, Dharani Nadendla, Shirui Cao, Renzhi Hao, Dong Li, Hanqing Guo

The 9th ACM/IEEE Workshop on Security and Privacy in Edge Computing (EdgeSP'26)

Ultrasound Watermark: Real-time Acoustic Watermarking against Voice Scams on Smartphones

Renzhi Hao, Shirui Cao, Yizhu Wen, Rishav Gupta, Dharani Nadendla, Mehran Kafai, Hanqing Guo, Dong Li

The 9th ACM/IEEE Workshop on Security and Privacy in Edge Computing (EdgeSP'26)

Position: Generative Engine Optimization Creates Underexamined Risks, Governance Must Target Concentration, Disclosure, and Academic Blind Spots

Yizhu Wen, Nan Zhang, Haohan Yuan, Xun Chen, Haopeng Zhang, Hanqing Guo

International Conference on Machine Learning (ICML'26)

[arXiv] [ICML page] [Code]

Mental Damage: Caption Poisoning Attacks on Retrieval-Augmented Text-to-Music Generation

Yizhu Wen, Shuhao Zhang, Nan Zhang, Long Cheng, Hanqing Guo

IEEE Symposium on Security and Privacy Workshops, ArtSec (IEEE S&P'26 Workshops)

[arXiv] [Program] [Code]

Web Intellectual Property at Risk: Preventing Unauthorized Real-Time Retrieval by Large Language Models

Yisheng Zhong, Yizhu Wen, Junfeng Guo, Mehran Kafai, Heng Huang, Hanqing Guo, Zhuangdi Zhu

Conference on Empirical Methods in Natural Language Processing, Main Conference (EMNLP'25)

Secure-IRS: Defending Against Adversarial Physical-Layer Sensing in ISAC System

Ziyu Chen, Denny Landika, Alvin Yang, Yizhu Wen, Haofan Cai, Yao Zheng, Hanqing Guo

International Conference on Computing, Networking and Communications (ICNC'25)

[PDF] [Demo] [Slides]

DiffImpute: Tabular Data Imputation with Denoising Diffusion Probabilistic Model

Yizhu Wen, Kai Yi, Jing Ke, Yiqing Shen

IEEE International Conference on Multimedia and Expo (ICME'24)

Independent Modulation of Discrete-Time Markov Chain Signals Generated from Tunneling Magnetoresistance Effect

Xihui Yuan, Jiajia Jian, Zheng Chai, Hengjia Wei, Yizhu Wen, Yadong Liu, et al.

IEEE Electron Device Letters (IEEE EDL'24)

Preprints & Under Review

SoK: Is Audio Watermarking Robust to Removal Attacks?

Yizhu Wen, Ashwin Innuganti, Aaron Bien Ramos, Hanqing Guo, Qiben Yan

Under review

[arXiv] [Project] [Code]

Real-Time Speech Watermarking for Live Voice Communication: Synthetic Speech Provenance and Post-Hoc Recording Attribution

Yizhu Wen (first author), et al.

Under review

PoisonedEar: Knowledge Poisoning Attacks on RAG Multimodal Reasoning in Audio-centric Language Models

Yizhu Wen (co-first author), et al.

Under review

Claim–Evidence Prompt Injection for Targeted Answer Contamination in Retrieval-Augmented Generation

Yizhu Wen (co-first author), et al.

Under review

Mitigating Cross-Tier Poisoning in Hierarchical Permission-Aware RAG

Yizhu Wen (co-first author), et al.

Under review

AuscultRAG: Retrieval-Augmented Audio-LLM for Cardiopulmonary Condition Classification

Yizhu Wen (co-first author), et al.

Under review

WAV2PWN: Leveraging Adversarial Transfer Patterns for Surrogate Selection in Black-Box SSL-Based ASR Attacks

Yizhu Wen (co-first author), et al.

Under review