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About

My name is RyotaK. I'm a 20-year-old security researcher who has found a few hundred bugs in various software, projects, or companies. I especially focus on source code analysis and often read the source code of random OSS projects. I'm currently working at Flatt Security Inc. and doing security research as both a hobby and a job.

I also do bug bounty as a hobby and have won multiple awards, such as the Most Valuable Hacker of H1-702 2022, at live hacking events.

I reported vulnerabilities to famous companies. Some examples are the following:

• Google

  Google's bug bounty program
• Microsoft

  MSRC
• AWS

  AWS's bug bounty program
• PayPal

  PayPal's bug bounty program
• Meta

  Meta's bug bounty program
• GitHub

  GitHub's bug bounty program
• Cloudflare

  Cloudflare's bug bounty program

Outside of security fields, I'm living in Japan, and I enjoy eating delicious foods such as ramen and sushi. I also love animals and have several different kinds of pets.