2020

OWASP Kansai - 体系的に学ぶモダン Web セキュリティ @ 京都 (Learning Modern Web Security @ Kyoto)

  • Did a online & long-term course on Web security.
  • Reference: event page.

OWASP Night 2020/02 (by OWASP Japan)

  • Talked about issues related to ReDoS and show a new attack vector.
  • Reference: event page

SECCON Beginners CTF 2020

  • Organized the whole project
  • Provided two challenges: unzip and somen.

2019

IPA Workshop - Learning Modern Web Security / IPA ワークショップ 体系的に学ぶモダン Web セキュリティ

  • Did an eight-hour workshop on web security in collaboration with Information-technology Promotion Agency.

IPA ワークショップ (体系的に学ぶモダン Web セキュリティ / Learning Modern Web Security)

  • Did an eight-hour workshop on web security in collaboration with Information-technology Promotion Agency.

CODE BLUE CTF 2019

  • Provided a challenge named "Snippet".

#websecjp: Learning Modern Web Security / #websecjp: 体系的に学ぶモダン Web セキュリティ

  • Did an eight-hour workshop on web security at National Institute of Information and Communications Technology (NICT) Innovation Center.
  • Reference: event page

Security Camp 2019

  • Conducted a 4-hour training named "体系的に学ぶモダン Web セキュリティ" (Learn Modern Web Security Systematically).
  • Reference: event page

JNSA e-zine ("BlackHat USA 2019 参加記")

  • Participated as a volunteer staff.

Packet Hacking Village of DEFCON 2019

  • Contributed an article to JNSA (Japan Network Security Association) e-zine.
  • Reference: article

Security Mini Camp 2019 in Yamanashi / セキュリティ・ミニキャンプ 2019 in 山梨

  • Gave a presentation to introduce activities of Security Camp Committee.
  • Reference: event page

SECCON Beginners CTF 2019

  • Provided three challenges: Ramen, Secure Meyasubako, and Himitsu.

Shibuya.XSS techtalk #11

  • Gave a presentation on hot topics on XS-Leaks and advanced CSS Injection.
  • Reference: event page

TSG CTF 2019

  • Provided two challenges: RECON and BADNONCE.

2018

Security Mini Camp 2018 in Okayama / セキュリティ・ミニキャンプ 2018 in 岡山

  • Conducted a 4-hour introduction-level class on Web security.
  • Reference: event page

第 14, 15, 19, 22 回 ゼロから始めるセキュリティ入門 勉強会

  • Gave a small presentations on hot topics on Web security at the time.
  • Reference: event page

第21 回 セキュリティさくら (Security Sakura, a Japanese seminar on security)

  • Talked on the complexity of Web and its security from the viewpoint of attackers.
  • Reference: event page

SECCON Beginners CTF 2017

  • Provided three challenges: Gimme your comment, SECCON Goods, Gimme your comment Revenge.

2013

OSC Hokkaido 2013 #osc13do

  • Gave a small presentation.
  • Reference: event page

#websecjp: Learning Modern Web Security / #websecjp: 体系的に学ぶモダン Web セキュリティ

  • Did an eight-hour workshop on web security at National Institute of Information and Communications Technology (NICT) Innovation Center.
  • Reference: event page