🧑‍💻 About Me

I am an Assistant Research Professor of Institute for Network Sciences and Cyberspace, Tsinghua University. My research focuses on enhancing the security of critical network infrastructures. I am broadly interested in network security, cellular system security, and data-driven approaches to security. My recent work investigates security vulnerabilities in 4G/5G cellular networks and the Public Key Infrastructure (PKI). Prior to my current position, I was a postdoctoral fellow at Tsinghua University from 2022 to 2024, co-advised by Professor Haixin Duan. I received my Doctoral degree in Computer Science and Technology at Tsinghua in 2022, and my Bachelor degree in Fundamental Science of Mathematics and Physics at Tsinghua in 2017.

📣 Hiring: our group is continuously looking for highly motivated PhD/Master/undergraduate students and research interns, please free to reach out via email (zhangyiming@tsinghua.edu.cn).

I also welcome academic collaborations in any form—please don’t hesitate to get in touch.

🔥 News

  • 2025.02: Joined the Institute for Network Sciences and Cyberspace at Tsinghua as a faculty.
  • 2024.10:  🎉🎉 Two papers accpeted by NDSS 2025.

📝 Publications

(*: Equal Contribution; #: Corresponding Author)

2025

2024

Before 2024

🎖 Honors and Awards

  • 2022, Shuimu Tsinghua Scholar, Tsinghua University.
  • 2022, Outstanding Graduate of Computer Science and Technology, Tsinghua University.
  • 2022, Best Student Paper Award, EthiCS 22 (Euro SP Workshop).
  • 2018, Tsinghua-Samsung Scholarship, Tsinghua University.
  • 2016, National Scholarship.

📖 Educations

  • 2017.08 - 2022.06, Ph.D., Department of Computer Science and Technology, Tsinghua University.
  • 2013.08 - 2017.06, B.Sc., Department of Physics (Fundamental Science of Mathematics and Physics), Tsinghua University.

💬 Invited Talks

  • 2024.08, Into the Dark: Unveiling Internal Site Search Abused for BlackHat SEO (oral presentation at USENIX 2024), Philadelphia, USA.
  • 2024.06, 5G security from a network evolution perspective: practical challenges and research progress, USTC, Hefei, China.
  • 2024.02, Understanding the Implementation and Security Implications of Protective DNS Services (oral presentation at NDSS 2024), San Diego, USA.
  • 2023.05, Security Challenges and Solutions in HTTPS Deployments, APNIC ISIF Project, Beijing, China.
  • 2021.11, Rusted Anchors: A National Client-Side View of Hidden Root CAs in the Web PKI Ecosystem (oral presentation at CCS 2021). Online.
  • 2021.06, Ethics in Cybersecurity and Network Measurement Research, Inforsec, Beijing, China.
  • 2020.11, Lies in the Air: Characterizing Fake-base-station Spam Ecosystem in China (oral presentation at CCS 2020). Online.

📝 Services

  • Artificial Evaluate Committee, USENIX Security 2025
  • Artificial Evaluate Committee, NDSS 2025
  • Artificial Evaluate Committee, CoNEXT 2023
  • Technical Committee, Securecomm 2023