If you want to contact me, please contact with

• E-mail : payload@kaist.ac.kr

• [MobiSys] HearMeOut: Detecting Voice Phishing Activities in Android
• [NDSS] DiffCSP: Finding Browser Bugs in Content Security Policy Enforcement through Differential Testing

• M.S. in Computer Science at KAIST.
• B.S. in Computer Science (minor in Industridal Design) at KAIST
• Graduated Busan Science High School

• Content Security Policy Level 3 Do not check callerRealm for eval (Reported via Chromium Bugs)
• PHP GH#8058 NULL Pointer dereference in mysqlnd
• PHP GH#8259 Fix datetime format string to follow POSIX spec in ftp_mdtm()
• Gnuboard5 #186
• CVE-2022-31628 Denial of Service using quine gzip file over phar: wrapper

• Security Researcher @ ENKI
• Web Hacker @ KAIST GoN
• Security Researcher @ Zerocution
• CTF Player (CTFtime)
  • International
    • LINE CTF 2022 1st place (Super HexaGoN), 2021 2nd place (KimchiSushi)
    • DEF CON 30 CTF Finalist (DiceGuesser)
    • CODEGATE 2022 3rd place
    • Blackhat MEA 2022 2nd place ({{ 7 * 7 }})
  • Domestic
    • WACON 2022 1st place
    • CCE 2022 3rd place
    • CCE 2023 1st place
• CTF Organizer
  • CODEGATE CTF 2020 Preliminary / Finals
  • CyberOC '사이버작전경연대회' 2019 Qualifications / Finals
  • CyberOC '사이버작전경연대회' 2020 Qualifications / Finals
  • Whitehat Contest '화이트햇콘테스트' 2021 Qualification
  • Whitehat Contest '화이트햇콘테스트' 2022 Qualification

• Web Developer

  • SPACE*IZ : Fan community of IZ*ONE
  • 프로젝트 평행우주 : Fan project of IZ*ONE

• Backend Developer

  • IZPM-FakeServer : Custom IZ*ONE Private Mail Server (AKB48 mail compatible