Di Wu

About Me

I received my Ph.D. in Computer Science from Zhejiang University in 2026, supervised by Prof. Wu Wen and Prof. Jian Liu. I was also fortunate to receive research guidance from Prof. Xuechao Wang.

I am currently seeking postdoctoral research opportunities in blockchain security, decentralized systems, and digital payment infrastructure.

Research interests: Decentralized systems; blockchain security; payment channels; DeFi security; cross-chain protocols; and digital payment infrastructure.

My research combines protocol analysis, empirical measurement, and systems security to uncover real-world threats and design secure, efficient digital payment infrastructure.

Publications

On the Atomicity and Efficiency of Blockchain Payment Channels

Di Wu, Shoupeng Ren, Yuman Bai, Lipeng He, Jian Liu, Wu Wen, Kui Ren, and Chun Chen

34th USENIX Security Symposium (USENIX Security 25), Seattle, WA, August 2025, pp. 4053–4072

Paper

PIRANA: Faster Multi-query PIR via Constant-weight Codes

Jian Liu, Jingyu Li, Di Wu, and Kui Ren

2024 IEEE Symposium on Security and Privacy (SP), San Francisco, CA, May 2024, pp. 4315–4330

Paper

LookAhead: Preventing DeFi Attacks via Unveiling Adversarial Contracts

Shoupeng Ren, Lipeng He, Tianyu Tu, Di Wu, Jian Liu, Kui Ren, and Chun Chen

FSE 2025 Research Papers, Vol. 2, Association for Computing Machinery, 2025, FSE083, pp. 1847–1869

Paper

Working Papers

Ordering Power is Sanctioning Power: Sanction Evasion-MEV and the Limits of On-Chain Enforcement

Di Wu, Yuman Bai, Shoupeng Ren, Xinyu Zhang, Yiyue Cao, Xuechao Wang, Wu Wen, and Jian Liu

Preprint, arXiv:2603.27739 [cs.CR], 2026

arXiv

Your Trust, Your Terms: A General Paradigm for Near-Instant Cross-Chain Transfer

Di Wu, Jingyu Liu, Xuechao Wang, Jian Liu, Yingjie Xue, Kui Ren, and Chun Chen

Preprint, arXiv:2403.15191 [cs.CR], 2024

arXiv