Extracurricular

Mar 2021 – Present

Build practical security skills through weekly CTF exercises and technical seminars in cryptography, reverse engineering, and systems security. Led the club hacking team to top-10% finishes in the CCE 2025 preliminary round and HackTheOn Sejong 2025.

Jul 2025 – Nov 2025

Competed in international hacking competitions, focusing on cryptography and reverse engineering, as part of a team ranked No. 1 in South Korea and No. 23 worldwide on CTFtime in 2025.