Profile

• Jinheon Lee
• CV: http://howdays.kr/CV.pdf
• handles: howdays, jinh
• howdays.kr , 255.kr , days.studio
• **LinkedIn , X**
• [email protected], [email protected]
  • If you want to talk in secret, DM by email or X.
  • I’ll provide private contacts.

Education

• B.S. in Cyber Security, Korea University, Seoul: (2022.03 - Current)
• Sunrin Internet High School: (2018.03 - 2021.03)

Work Experience

• Zellic
  • 2025.01 - Present
  • Security Researcher (Part-Time)
    • Web3, Blockchain
• PKSecurity
  • 2023.03 ~ 2024.12
  • Offensive Security Researcher (Full-Time)
    • Android 0-click Research
    • A variety of environments.
  • Published the process of identifying and exploiting a vulnerability in Virtualbox, a personal discovery made in 2021
    • https://blog.pksecurity.io/2024/05/21/virtualbox_escape_2021.html
• Enki
  • 2021.03 ~ 2021.10
  • Offensive Security Researcher (Full-Time)
    • A variety of environments

Achievements / Awards

“Disclosed” Bug Bounty

• SmartBCH / Drain All Tokens
• LivePeer / Freeze Delegated Stake
• CVE-2021-26028