LY Corp

Is a merger from LINE corp and Yahoo Corp. LINE Corp is known for its popular messaging platform called LINE Messenger, which integrated various digital services like payments, gaming, and AI-based solutions.

Home page: https://www.lycorp.co.jp/

My main tasks are:

• Identify vulnerabilities in web and mobile applications, where I have discovered issues including IDOR, XSS, SSRF, RCE, SQLi, NoSQLi, and path traversal.
• Develop automated scripts for thousands of services running on LINE’s cloud infrastructure to detect and mitigate security risks, such as log4j vulnerabilities and legacy or insecure libraries like libwebp related libs.
• Manage LINE Corporation’s bug bounty program.
• Organize LINE Capture the Flag (CTF) challenges annually.
• Conduct security training sessions for our developers.