Harold Kim a.k.a. stypr

Currently working as a security engineer in Japan.
Interested in web exploitation, pentests and development.

👀 Affiliated with

• 💼 Flatt Security Inc.
• 🔬 HypwnLab
• 🚩 r3kapig

🐞 Disclosed vulnerabilities

• CVE-2021-20667
• CVE-2021-20668
• CVE-2021-20669
• CVE-2021-20670
• CVE-2021-20671
• CVE-2020-28991
• CVE-2020-5659
• CVE-2020-5662
• CVE-2020-5663
• CVE-2020-5640
• CVE-2020-15188
• CVE-2020-15182
• CVE-2020-15189
• CVE-2020-15183
• CVE-2020-15159
• CVE-2019-6002
• CVE-2019-5631
• KVE-2018-0441
• KVE-2018-0449
• KVE-2018-0439
• KVE-2018-0514
• KVE-2018-0513
• KVE-2018-0438
• KVE-2018-0436
• ...

🚩 CTF

International

• 2021 🥈 LINE CTF
• 2020 🥉 HackTM CTF
• 2020 🏅 DEFCON 28 CTF
• 2020 🥇 InterKosen CTF
• 2019 🥇 Hack.lu CTF
• 2019 🥇 RCTF 2019
• 2019 🥇 *CTF 2019
• 2019 🥇 Harekaze CTF
• 2019 🥇 0CTF/TCTF 2019
• 2019 🏅 DEFCON 27 CTF
• 2018 🏅 Real World CTF
• 2018 🥇 BCTF 2018
• 2018 🥉 Hack.lu CTF
• 2017 🏅 CodeGate CTF
• 2017 🥇 ASIS CTF
• 2017 🥇 BSides San Francisco CTF
• 2016 🥈 EKOPARTY CTF
• 2016 🥈 Silk Road CTF
• 2016 🥈 Insomni'hack
• 2016 🥇 ASIS CTF
• 2016 🥇 C4CTF
• 2016 🥇 TUCTF
• 2016 🥇 Sharif University CTF
• 2016 🥈 Internetwache CTF
• 2016 🏅 PHDays
• 2015 🥇 Hack Zone Tunisia
• 2015 🥇 Break In
• 2015 🥈 HITB CTF
• 2015 🏅 CSAW CTF
• 2014 🏅 CSAW CTF
• 2014 🏅 DEFCON 22 CTF
• 2014 🥈 Olympic Sochi CTF

Domestic

• 2020 🥈 COC (Whitehat Contest)
• 2019 🥇 COC (Whitehat Contest)
• 2018 🥇 ROK Army Hacking Defense Contest
• 2015 🥇 14th HUST Hacking Festival
• 2015 🥇 2015 Inc0gnito Hacking Competition

Organizer

• 2020 BingoCTF
• 2019 XCTF Finals 2019
• 2018 ASIS CTF
• 2016 KAIST & POSTECH Science War
• 2015 POSTECH & KAIST Science War
• 2014 KAIST & POSTECH Science War

📰 Patent

• KR101623096B1