Wongi Lee
- Mailqw3rtyp0@gmail.com
- GitHubqwerty-po
- Twitter@_qwerty_po
Undergraduate student in Computer Science and Engineering.
Work Experience
Theori
Researcher
Jun 2022 -
Worked on vulnerability research, exploit development, and security engineering projects, progressing from internship work to independent research ownership.
Researcher
Aug 2025 -
Owned research tasks from idea validation through exploit development, documentation, and public-facing presentation or disclosure work.
Junior Researcher
Jan 2024 - Jul 2025
Contributed to vulnerability research and exploit tooling with a focus on kernel, browser, and systems security topics.
Intern Researcher
Jun 2022 - Aug 2022, Mar 2023 - Dec 2023
Supported offensive security research and implementation work across internal projects, training material, and vulnerability analysis tasks.
Presentations
POC Conference 2025
Presented a race-condition exploitation workflow, following the path from a small bug idea to a practical pwnable impact.
HEXACON 2024
Presented a Linux kernel exploitation technique based on cross-CPU allocation behavior in preempt-disabled execution paths.
Experience
Chromium and Third-Party Contributions
V8, Blink, FFmpeg, Sanitizer API
2026 -
Contributed vulnerability research across Chromium and related components, including CVE-2026-8539 and CVE-2026-7335.
.HACK Conference
Organizer
2025 - 2026
Organized CTF and booth operations, preparing event content and on-site technical programs.
Linux Kernel Contributions
2024 -
Contributed Linux kernel vulnerability work and disclosures, including CVE-2024-41010 and CVE-2024-50264.
kernelCTF Submissions
2024 -
Submitted multiple kernelCTF exploits and writeups, including exp183, exp184, exp196, exp197, exp237, and exp522.
Cold Fusion
CTF Team Lead
2024 -
Led CTF team operations and built tooling for competition workflows.
DEF CON Exploit Manager
Designed and developed an exploit, packet, and patch management system for CTF operations and competition-time coordination.
Lectures and Content
Systems Security Lectures
Authored practical security lecture material covering Linux fundamentals, glibc exploitation, Linux kernel internals, V8, and Windows internals.
Covered files, directories, processes, environment variables, file descriptors, package management, networking, and editor workflows.
Covered libc GOT overwrite, FSOP, exit handlers, TLS destructor lists, safe linking, and related exploitation techniques.
Covered kernel exploitation primitives, allocator internals, msg_msg, pipe_buffer, and simple_xattr attack surfaces.
Covered V8 object and heap structure, garbage collection, optimization behavior, and exploitation techniques.
Covered PE files, SEH, CFG, NT heap, segmented heap, and Windows exploitation fundamentals.
CTF Challenge Authoring
Designed and wrote CTF challenges for security education and competition practice.
Awards
2026
DEF CON CTF Final · Cold Fusion
Finalist
2025
Pwnie Awards
Best Priv Esc
2025
Pwn2Own
RHEL
2025
DEF CON CTF Final · Cold Fusion
10th
2025
HITCON CTF · CTF Demon Hunters
4th
2024
DEF CON CTF Final · Cold Fusion
9th
2024
HITCON CTF Final · Cold Fusion
6th
2024
ICPC Seoul Regional Finals · ConForza
2024
UCPC Final
2023
HITCON CTF Final · Program Teolmochi
4th
2023
Codegate CTF Finals
3rd
2023
ICPC Seoul Regional Finals · BalloonBreakers
2023
PPC
3rd
2022
Codegate CTF Finals
5th
2022
ICPC Seoul Regional Finals · CRYPKING
2021
PPC · SOTA
2nd