[07] 2025/11 | ELEctric sector Cyber Contest (ELECCON), 🥉 3rd place, Team. 전기뱀장어 (2 members)
[06] 2024/09 | Korea Army Hacking Defense Competition, 🥇 1st place, Team. cat /flag (2 members)
Prize of Chief of Staff of the Army of the Republic of Korea (⭐⭐⭐⭐)
[05] 2024/09 | Cyber Conflict Excercise (CCE), 🥉 3rd place, Team. 곤뇽 (4 members)
[04] 2021/11 | WHITEHAT CONTEST KOREA,🥉 3rd place, Team. 육군띄어쓰기We띄어쓰기해커 (4 members)
Prize of Cyber Operations Commander of the Republic of Korea (⭐)
[03] 2021/10 | Korea Army Hacking Defense Competition, 🥇 1st place, Team. 육사컴과 (2 members)
Prize of Chief of Staff of the Army of the Republic of Korea (⭐⭐⭐⭐)
[02] 2017/11 | Codefest CTF, 🥈2nd place, Team. SecurityFirst (2 members)
[01] 2017/03 | Korea Army Hacking Defense Competition, 🥇 1st place, Team. SecurityFirst (2 members)
Prize of Chief of Staff of the Army of the Republic of Korea (⭐⭐⭐⭐)
[06] 2025/12 | Ulsan Eithcal Hacking Competition (UHCON), 🥈 2nd place, Team. 고래파덕 (4 members)
[05] 2023/12 | 9th Digital Scene Investigation Challenge, 🥇 1st place, Individual | 💿 Write-Up
Prize of Prosecutor General (Supreme Prosecutors' Office of the Republic of Korea)
[04] 2022/12 | KDFS Digital Forensic Challenge, 🥈 2nd place, Team. 텅장 (4 members) | 💿 Write-Up
Prize of Commissioner General (Chief of Korean National Police Agency)
[03] 2022/12 | 8th Digital Scene Investigation Challenge, 🥈 2nd place, Individual | 💿 Write-Up
[02] 2021/12 | Digital Forensic Challenge, 🥇 1st place, Team. DogeCoin (4 members) | 🔗 Archive 💿 Write-Up
Prize of Director of National Intelligence Service of the Republic of Korea
[01] 2019/05 | 6th Digital Scene Investigation Challenge, 🥉 3rd place, Individual
[04] 2025/02 | DCM4 (Defense Cyber Marvel), Team. the Republic of Korea | 🔗 More info.
Role: Threat hunting (Main), DFIR (Sub#1), System hardening (Sub#2)
[03] 2024/11 | SCAN 2024 CTF, 6th place (0.07 BTC), Team. 😁(:grin:) | 🔗 More info.
[02] 2022/04 | Locked Shields, Team. the Republic of Korea | 🔗 More info.
[01] 2018/11 | O-Prize Idea Contest, 🥈 2nd place, Team. SecurityFirst1
Title: Collecting and detecting system for malware distributed to torrents and blog attachments