I’m a second-year Ph.D. student in Computer Science at Virginia Tech, advised by Prof. Taejoong (Tijay) Chung.
My research broadly spans network security and Internet measurement, with a focus on understanding and improving Internet infrastructure and trust systems (like BGP and RPKI).

News

• Aug 2026: I’m thrilled to continue at Cloudflare as a Research Intern for Fall 2026, continuing to build a better Internet from Austin, TX!
• Feb 2026: I’m thrilled to join Cloudflare as a Research Intern for Summer 2026. Looking forward to building a better Internet from Austin, TX!
• Feb 2026: One paper accepted to IMC 2026.
• Sept 2025: Honored to receive the IMC 2025 Travel Grant.
• Sept 2025: One paper accepted to Oakland’26.
• Sept 2025: Invited to give a talk at the UCSD CAIDA AIMS-18 (GMI-AIMS-6) workshop (travel grant awarded).
• Aug 2025: One paper accepted to ACM Internet Measurement Conference, Student Workshop, 2025.
• Jan 2025: Joined Virginia Tech as a Ph.D. student in Computer Science.

Work

• Research Intern, Cloudflare Inc, 09/2026 - 12/2026
• Research Intern, Cloudflare Inc, 05/2026 - 08/2026

Education

• Virginia Tech, Virginia, United States
  Ph.D. in Computer Science — Jan 2025 – Present
  Advisor: Prof. Taejoong (Tijay) Chung

• ETH Zürich, Zürich, Switzerland
  Exchange Student, Master of Computer Science — Sept 2021 – Sept 2022
  Supervised by Prof. Adrian Perrig

• KTH Royal Institute of Technology, Stockholm, Sweden
  MSc Software Engineering of Distributed Systems — Aug 2020 – Sept 2022

• KU Leuven, Leuven, Belgium
  MSc Electronics and ICT Engineering Technology — Sept 2019 – Jun 2020

• KU Leuven & Chongqing University, China & Belgium
  Bachelor of Engineering in Electronics Engineering (double degree) — Sept 2015 – Jul 2019

Publications

(* denotes equal contribution)

• 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, Taejoong Chung.
  Proceedings of the IEEE Symposium on Security and Privacy (Oakland’26), 2026.

• ASINT: Learning AS-to-Organization Mapping from Internet Metadata
  Yongzhe Xu*, Weitong Li*, Eeshan Umrani, Taejoong Chung. ACM Internet Measurement Conference, Student Workshop (IMC-SW’25), 2025.
  Full version ArXiv Project website ASINT

Awards and Honors

• ACM Internet Measurement Conference 2025 Travel Grant (Sept 2025)
• Scholarship from ETH Zürich NetSec Group (Jan 2022)
• KTH Royal Institute of Technology One-Year Scholarship (May 2021)
• Exchange Scholarship from Chongqing University (Apr 2018)