Weitong Li PhD Candidate Department of Computer Science Virginia Tech Email: weitongli@vt.edu

Bio

I'm a finial year PhD candidate in the Department of Computer Science at Virginia Tech, advised by Tijay Chung. Before joining VT, I received my bechelor'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

• [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.
• [01/2025] Our paper "ImpROV" has been accepted to USENIX Security'25.
• [09/2024] I have been awarded the Pratt Fellowship for the 2024-2025 academic year.
• [05/2024] I will intern at Cablelabs in Summer 2024.

Publications

• [To be appear] 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
  

Work

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

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)