Weitong Li Postdoctoral Researcher Department of Computer Science Virginia Tech Email: weitongli@vt.edu

Bio

I'm a postdoctoral researcher in the Department of Computer Science at Virginia Tech. I received my PhD from Virginia Tech in 2025, advised by Tijay Chung. Before joining VT, I finished my bachelor from Zhejiang University CS Department in 2020.

My research focuses on measuring, understanding, and securing Internet infrastructure. I conduct Internet-scale measurements to uncover real-world behaviors, risks, and dependencies, and design systems and protocols to improve the security, performance, and resilience of the Internet.

Recent Updates

• [03/2026] I have been selected as an ARIN Fellow for ARIN'57.
• [02/2026] I received the ISOC Pulse Fellowship, thanks ISOC for the support!
• [01/2026] I will serve on TPC for CCS'26 and TMA'26.
• [11/2025] I will attend IETF-124 meetings in Montreal, Canada.
• [10/2025] I have defended my PhD, great thanks to my advisor Tijay and all my collaborators!
• [09/2025] I have been invited to attend the Google Networking Research Summit.
• [08/2025] I received travel grant from Usenix and will attend the Usenix Security'25.
• [06/2025] I will serve on TPC for Usenix Security'26.

Education

• Ph.D., Virginia Tech, 08/2021 - 12/2025
• B.Eng, Zhejiang University, 09/2016 - 07/2020

Work

• Postdoctoral Researcher, Virginia Tech, 12/2025 - Present
• Research Intern, Cablelabs, 05/2024 - 08/2024
• Research Intern, Cloudflare, 05/2023 - 08/2023

Publications

(* denotes equal contribution)

Conferences

• RScope: Unveiling Global ROV Deployments and Dependencies in the Post-ROV Era  
  Weitong Li*, Yongzhe Xu*, Mingwei Zhang, Vasileios Giotsas, and Taejoong Chung
  In Proceedings of the ACM Internet Measurement Conference (IMC'26), Karlsruhe, Germany, October 2026
  
• The Threat Landscape of IP Leasing in the RPKI Era  
  Weitong Li, Yongzhe Xu, and Taejoong Chung
  In Proceedings of the IEEE Symposium on Security and Privacy (Oakland'26), San Francisco, USA, May 2026
  
• Demystifying RPKI-Invalid Prefixes: Hidden Causes and Security Risks  
  Weitong Li, Tao Wan, and Taejoong Chung
  In Proceedings of the Network and Distributed System Security Symposium (NDSS'26), San Diego, USA, February 2026
  
• ImpROV: Measurement and Practical Mitigation of Collateral Damage of RPKI Route Origin Validation  
  Weitong Li, Yuze Li, and Taejoong Chung
  In Proceedings of the USENIX Security Symposium (Security'25), Seattle, USA, August 2025
  
• SPF Beyond the Standard: Management and Operational Challenges in Practice and Practical Recommendations  
  Md. Ishtiaq Ashiq, Weitong Li, Tobias Fiebig, and Taejoong Chung
  In Proceedings of the USENIX Security Symposium (Security'24), Philadelphia, USA, August 2024
  
• IRRedicator: Pruning IRR with RPKI-Valid BGP Insights  
  Minhyeock Kang, Weitong Li, Roland van Rijswijk-Deij, Ted "Taekyoung" Kwon, and Taejoong Chung
  In Proceedings of the Network and Distributed System Security Symposium (NDSS'24), San Diego, USA, February 2024
  
• RoVista: Measuring and Understanding the Route Origin Validation (ROV) in RPKI  
  Weitong Li, Zhexiao Lin, Md. Ishtiaq Ashiq, Emile Aben, Romain Fontugne, Amreesh Phokeer, and Taejoong Chung
  In Proceedings of the ACM Internet Measurement Conference (IMC'23), Montreal, Canada, October 2023
  
• You’ve Got Report: Measurement and Security Implications of DMARC Reporting  
  Md. Ishtiaq Ashiq, Weitong Li, Tobias Fiebig, and Taejoong Chung
  In Proceedings of the USENIX Security Symposium (Security'23), Anaheim, USA, August 2023
  

Preprints

• pqRPKI: A Practical RPKI Architecture for the Post-Quantum Era  
  Weitong Li, Yuze Li, and Taejoong Chung
  arXiv preprint arxiv:2603.06968
  
• ASINT: Learning AS-to-Organization Mapping from Internet Metadata  
  Yongzhe Xu*, Weitong Li*, Eeshan Umrani, and Taejoong Chung
  arXiv preprint arXiv:2508.02571
  

Professional Services

Technical Program Committee Member:

• ACM Conference on Computer and Communications Security (CCS'26)
• USENIX Security Symposium (Security'26)
• Network Traffic Measurement and Analysis Conference (TMA'26)
• ACM Internet Measurement Conference (shadow TPC for IMC'22, 25)

Reviewer:

• IEEE Transactions on Dependable and Secure Computing (TDSC)
• IEEE Transactions on Information Forensics and Security (TIFS)
• IEEE/ACM Transactions on Networking (ToN)