Yoochan | Offensive Security

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I’m a Postdoc at Max Planck Institute for Security and Privacy, with a Ph.D. from the Seoul National University.

My research advances offensive security methodologies to fundamentally strengthen system resilience. By developing novel exploitation techniques, I aim to uncover critical ‘blind spots’ that defensive-centric approaches often overlook.

I am always open to exploring new ideas and happy to collaborate with researchers from various background.

News

Dec 3, 2025 DirtyFree is accepted to NDSS 2026!
Nov 1, 2025 I joined Max Planck Institute for Security and Privacy as a postdoctoral researcher.
Feb 3, 2023 My talk about macOS privilege escalation is accepted to the Hack In The Box Amsterdam 2023!

Selected publications

  1. DirtyFree: Simplified Data-Oriented Programming in the Linux Kernel
    Yoochan Lee, Hyuk Kwon, and Thorsten Holz
    In Network and Distributed System Security Symposium (NDSS), Feb 2026
  2. Pspray: Timing Side-Channel based Linux Kernel Heap Exploitation Technique
    Yoochan Lee, Jinhan Kwak, Junesoo Kang, Yuseok Jeon, and Byoungyoung Lee
    In USENIX Security Symposium, Aug 2023
  3. ExpRace: Exploiting Kernel Races through Raising Interrupts.
    Yoochan Lee, Changwoo Min, and Byoungyoung Lee
    In USENIX Security Symposium, Aug 2021