Identity

st4rlight (aka. Ainsetin)

Think positive, Stay healthy, Be the best.

"Excellence, then, is not an act, but a habit."

I am a security researcher from Republic of Korea,
currently focused on browser exploitation and advanced vulnerability analysis.
Building what nobody tried before is the part I enjoy most.

st4rlight portrait

School

2022 ~ Current

Sejong University

Dept of Computer and Information Security

2019 ~ 2021

Korea Digital Media High School

Hacking Defense

Timeline

Full timeline
SAS CTF (2025) thehackerscrew International ๐Ÿ‡น๐Ÿ‡ญ - Finals 10th
DEFCON 33 (2025) Cold Fusion International ๐Ÿ‡บ๐Ÿ‡ธ - Quals 7thFinals 10th
HITCON CTF (2024) Cold Fusion International ๐Ÿ‡น๐Ÿ‡ผ - Finals 6th
DEFCON 32 (2024) Cold Fusion International ๐Ÿ‡บ๐Ÿ‡ธ - Finals 9th
HITCON CTF (2023) ํ”„๋กœ๊ทธ๋žจํ„ธ๋ชจ์ฐŒ International ๐Ÿ‡น๐Ÿ‡ผ - Finals 4th

Motto

be the special st4rlight in the world

Collecting high-quality and critical bugs is my short-term goal.

Research Direction

  • Browser Exploitation
  • Mobile Research
  • Reverse Engineering
  • CTF Pwn & Web
  • Math / Foundations

Speaker

  • 2021 Hspace HackTheBox Write-Up Seminar
  • 2021 TeamH4C Conference for Students (review)
  • 2022 Samsung SDS Security Research Seminar

Bug Hunting Results

TBD - ongoing focus on high-quality and critical reports.