- M.S. Student of ML Lab and CompSec Lab
- Member of PLUS
- (Ex) Software Engineer of Theori, ChainLight and Relic Protocol
- 🛡️ AIxCC Final Competition (2025, Winner)
- 🛡️ AIxCC Semifinals Competition (2024, Winner)
- 🦆 Theori (2022-2023, Software Engineer)
- 🦆 Theori (2021, Researcher)
- ☠ 2025 DEF CON CTF
Cold Fusion10th - ☠ 2024 DEF CON CTF
Cold Fusion9th - ☠ 2023 DEF CON CTF
MMM1st - ☠ 2023 DEF CON CTF Qualifier
MMM2nd - 📱 2023 SSTF
The Duck1st - 🦆 2023 HITCON CTF
프로그램털모찌4th - 🦆 2023 HITCON CTF Quals
프로그램털모찌6th - 🦋 2023 Codegate CTF Final
PLUS3rd - 🦋 2023 Codegate CTF Preliminary
PLUS3rd - 🦋 2022 Codegate CTF Final
PLUS5th - 🦋 2022 Codegate CTF Preliminary
PLUS5th - 0️⃣ 2022 zer0pts CTF
PLUS5th - 🦊 2022 UIUCTF
PLUS6th - 🦆 2022 HITCON CTF
The Duck8th - 0️⃣ 2021 zer0pts CTF
K-Students2nd - 🦅 2021 POSTECH-KAIST SCIENCE WAR
PLUS2nd - 🥑 2021 LINE CTF
K-Students13th - ☠ 2020 DEF CON CTF
koreanbadass12th - ☠ 2020 DEF CON CTF Qualifier
koreanbadass7th - 🐶 2020 CONFidence CTF Teaser
DDP1st - 🐱 2020 Plaid CTF
koreanbadass4th - 🦋 2020 Codegate CTF Preliminary
MINUS8th - 🦊 2020 UIUCTF
PLUS6th - 🐨 2020 SECCON CTF
Disaster-level Hacker Laboratory8th - 🐯 2020 Balsn CTF
PLUS8th - 🥑 2021 LINE CTF
K-Students13th - 🐹 2020 Definit CTF
2u1q18th - 0️⃣ 2020 0CTF/TCTF Quals
PLUS x GoN20th - 1️⃣ 2020 N1CTF
PLUS21th - 🦆 2019 HITCON CTF
LeaveCat-PLUS14th - 🇯🇵 2019 TokyoWesterns CTF
LeaveCat-PLUS17th