[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