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

Bio

I'll be a postdoctoral researcher in the Department of Computer Science at Virginia Tech. I received my PhD from Virginia Tech, advised by Tijay Chung. Before joining VT, I finished my bachelor's degree from Zhejiang University.

I am broadly interested in measurement, security, and networking. My research focuses on measuring and securing Internet protocols including routing (like BGP and RPKI), Email, and DNS.

Recent Updates

• [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.
• [04/2025] I will serve on shadow TPC for ACM IMC'25.
• [04/2025] I received travel grant from the IRTF to attend the IETF-123 meetings in Madrid, Spain.

Education

• Ph.D., Virginia Tech, 08/2021 - 10/2025
• B.Eng, Zhejiang University, 09/2016 - 07/2020

Work

• Research Intern, Cablelabs, 05/2024 - 08/2024
• Research Intern, Cloudflare, 05/2023 - 08/2023

Publications

(* denotes equal contribution)


• 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
  
• ASINT: Learning AS-to-Organization Mapping from Internet Metadata  
  Yongzhe Xu*, Weitong Li*, Eeshan Umrani, and Taejoong Chung
  arXiv preprint arXiv:2508.02571
  
• 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  
  Mohammad Ishtiaq Ashiq Khan, 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, Mohammad Ishtiaq Ashiq Khan, 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  
  Mohammad Ishtiaq Ashiq Khan, Weitong Li, Tobias Fiebig, and Taejoong Chung
  In Proceedings of the USENIX Security Symposium (Security'23), Anaheim, USA, August 2023
  

Professional Services

Technical Program Committee Member:

• USENIX Security Symposium (Security'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)