Koreaโs #1-ranked hacker on HackerOne is back with a follow-up post! ๐
Hyunseo Shin (KU, 4th year) previously shared how he uncovered open-source 0-days using LLM agents.
Now, he breaks down the AI-based vulnerability detection workflow behind those findings.
Full post below ๐ฅ
๐ https://t.co/6UodzgY5tN
#CyKor #AI #hackerone
We just posted a new article on our blog! ๐
"How I Found Open-Source 0-days with an LLM Multi-Agent Workflow"
๐ Hyunseo Shin (KU, 4th year) shares how an LLM-based multi-agent workflow uncovered real 0-days in open-source projects.
Worth a read๐
๐ https://t.co/cDeLcJbebg
#Cykor #LLM #ZeroDay
We're excited to share our first post for 2026!: "[Paper Review] Factoring an integer with three oscillators and a qubit", written by Minjae Lee, who is a member of our club and 4th year at KU!
https://t.co/wxVgK73l3h
Thank you everyone for taking part in CyKor CTF 2025! ๐
We truly appreciate all the amazing teams who joined, battled hard, and made this yearโs competition incredible. ๐ช๐ป
Here are the final results:
๐ฅ The Amazing Digital Orange! โ 7585
๐ฅ r3kapig โ 5489
๐ฅ โดโ โ 5358
Attention, hackers ๐ฅ๐ฅ
CyKor CTF (@cykorctf) is just 2 days away โ sign up now, weโre ready for you! ๐ช
Join and Play ๐ https://t.co/IaGjBHfd3c
This time, weโre proud to introduce HSPACE as our Infra Sponsor!
*HSPACE* is a *community of hackers* doing all kinds of exciting things.
*Our cozy space is open 24/7 and completely free to use*, so feel free to stop by anytime. you'll love it.
Address: 4F, 29 Teheran-ro 4-gil, Gangnam-gu, Seoul, 06240, Republic of Korea
Thrilled to have Zellic (@zellic_io) on board as a sponsor for CyKor CTF (@cykorctf)!
Thanks for helping us make this yearโs event bigger, better, and bolder. ๐ชโจ
Zellic is a security research firm. We hire talented hackers to break critical software, ranging from virtual machines to compilers and major web apps to proof systems. Before Zellic, we founded perfect blue, the #1 CTF team in 2020 and 2021. We offer a comprehensive benefits package and direct equity participation, as well as flexible hours, remote work, and both full-time and part-time roles.
Weโre proud to have ExpOnlyNoPoc (@exp_only_no_poc ) join us as a sponsor of CyKor CTF (@cykorctf)!
We truly appreciate your partnership and support in empowering this yearโs competition to reach new heights. ๐ชโจ
We are not a company, just trying to trying to build a network of researchers especially in South Korea( or any other countries nearby! ) to perform collaborative, funny security vulnerability research without breaking your( and my ) NDAs! DMs via X(@exp_only_no_poc) if you have any vulnerability research projects to dig into together!
Weโre excited to welcome Enki Whitehat (@ENKI_official_X ) as a sponsor of CyKor CTF (@cykorctf)!
weโre grateful for your partnership in taking this yearโs competition to the next level. ๐
ENKI Whitehat is a leading South Korean offensive security company specializing in pentesting, threat intelligence, and vulnerability research.
Renowned for their technical excellence, they hold a staggering record of 24 CTF championships and over 100 disclosed vulnerabilities.
Beyond services, they empower the industry through โOFFenโ (ASM/PTaaS) and their โCAMPโ training platform. Experience top-tier offensive security capabilities with ENKI Whitehat. ๐
Dreamhack (@dreamhack_io) joins us as a proud sponsor of CyKor CTF (@cykorctf) !
Thank you for your generous support and partnership in making this yearโs competition even more amazing. ๐ช
Dreamhack is South Koreaโs largest cybersecurity and hacking learning platform.
From LLMs to blockchain, you can build a strong foundation through more than 180 high-quality courses.
Reinforce your learning with over 1,000 hands-on wargame challenges and grow alongside a vibrant community where users actively ask and answer questions. Start your journey toward becoming a true white-hat hacker with Dreamhack. ๐
๋๋ฆผํต, ๋ํ๋ฏผ๊ตญ ์ต๋ ์ฌ์ด๋ฒ ๋ณด์ ํดํน ํ์ต ํ๋ซํผ. LLM๋ถํฐ ๋ธ๋ก์ฒด์ธ๊น์ง, 180๊ฐ ์ด์ ๊ฐ์๋ก ๊ธฐ์ด๋ถํฐ ํํํ๊ฒ.
1,000๊ฐ ์ด์์ ์ค์ต ๋ฌธ์ (Wargame)๋ก ๋ฐฐ์ด ๋ด์ฉ์ ์ง์ ์ฒด๋ํ๊ณ , ์ ์ ๋ผ๋ฆฌ ์ํธ ์ง์์๋ตํ๋ ํด์ปค ์ปค๋ฎค๋ํฐ๊น์ง. ์ง๊ธ ๋๋ฆผํต์์ ์ง์ง ํ์ดํธํ ํด์ปค๋ก ์ฑ์ฅํ๋ ์ฌ์ ์ ์์ํ์ธ์ ๐
@cykorctf All announcements, including the official scoreboard, will be posted on @cykorctf. We kindly invite you to follow the account for updates.
The event will also be listed on https://t.co/uEZg0bVvsA soon.
๐ข CyKor CTF (@cykorctf) Announcement
CyKor is pleased to host the upcoming CyKor CTF with great prizes!
โข 1st Place: $ 3,000
โข 2nd Place: $ 1,500
โข 3rd Place: $ 500
The event will be held for 24 hours, from 2025.12.06 01:00 (UTC+0) !
๐ CTF Link: https://t.co/QPHKJyZ3u2
@cykorctf We are excited to announce that this yearโs competition is supported by several WONDERFUL and distinguished sponsors.
Their introductions will be shared in the coming days !
We just posted a new article on our blog!
Jimin Jeong (KU, 4th year) got first blood in the Flag Checker (Rev) challenge from Crew CTF 2025 !
He wrote a full write-up on it โ check it out ๐
https://t.co/ikBVhkuiGZ
#CrewCTF#CyKor#CTF
1. Weโre actively looking for sponsors for CyKor CTF.
If youโre interested, please reach out at [email protected] ๐
2. Weโd love to connect with hacking/security clubs from universities abroad!
Weโre also considering inviting each other to our universities!! Please DM!! ๐
We just posted a new article on our blog! ๐
"Secure Container Live Migration: A Lightweight Approach to Confidential VM Migration"
๐ก๏ธ Chungyhyun Kang (KU, 4th year) authored this piece โ check it out for insights into confidential VM migration!
๐ https://t.co/fhZl7PXPp9
#CyKor