Kaiwen Shen

Kaiwen Shen

Ph.D. Student of Tsinghua University

Network and Information Security Lab (NISL)

Hello, I am Kaiwen Shen, a fifth-year PhD student at Network and Information Security Lab (NISL) of Tsinghua University, advised by Prof. Haixin Duan. My research focuses on discovering previously unknown security issues in the real-world systems. Currently I am working in the areas of protocol security, web security and data-driven security. Additionally, I (Xiaoxi) am a CTF player of Tea-Deliverers, Blue-Lotus. We won the championship and earned a $10,000 prize at 2019’s HITCON.

Recent News:

  • [June, 22] Our paper (HDiff) won the DSN 2022 Best Paper Runner-Up.

  • [Mar, 22] Our paper on semantic gap attack was accepted by DSN 2022.

  • [May, 21] Our paper on the large-scale measurement of DKIM deployment accepted by USENIX Security 2022.

  • [Sep, 20] Our paper on email security was accepted by USENIX Security 2021.


  • Protocol Security
  • Web Security
  • Data-driven Security


  • PhD in Information Security, 2017 - Now

    Tsinghua University

  • BSc in Information Security, 2013 - 2017

    Hunan University