tyage.net

Publications

『実践 Webペネトレーションテスト』（オライリー・ジャパン、ISBN978-4-8144-0125-3）

Oct 2025

Work Experience

Security Engineer at Ierae Security, Inc

May 2020 – Present

Security Engineer at LINE Corporation

Apr 2018 – Apr 2020

Software Engineer at Morelor, Inc.

2013 – 2017

Education

Kyoto University Graduate School of Informatics

Apr 2016 – Mar 2018

Kyoto University Faculty of Engineering

Apr 2012 – Mar 2016

Affiliations

CTF Teams

Organized CTFs

International Cybersecurity Challenge TOKYO 2025 (System Development)

Nov 2025

IERAE CTF 2025 (Challenge Creation)

Jun 2025

IERAE CTF 2024 (Challenge Creation)

Sep 2024

IERAE DAYS CTF v0.1 (Challenge Creation)

Dec 2023

ACSC 2023 (Challenge Creation)

Feb 2023

ACSC 2021 (Challenge Creation)

Sep 2021

TokyoWesterns CTF 2020 (Challenge Creation)

Sep 2020

CODE BLUE CTF 2019 (System Development)

Oct 2019

CODE BLUE CTF 2018 Quals & Finals (Challenge Creation & System Development)

Jul 2018 – Nov 2018

CODE BLUE CTF 2017 (Challenge Creation)

Nov 2017

ED CTF (Challenge Creation)

2014

International On-site CTFs

🏆 DEF CON CTF 2026 (Las Vegas, USA)
CODEGATE CTF 2026 Finals (Seoul, South Korea)
🏆 SECCON CTF 13 International Finals (Tokyo, Japan)
🥈 Automotive CTF 2024 (Detroit, USA)
🏆 Midnight Sun CTF 2024 Finals (Stockholm, Sweden)
🥈 Midnight Sun CTF 2023 Finals (Stockholm, Sweden)
🥉 HITCON CTF 2023 Final (Taipei, Taiwan)
SECCON CTF 2023 International Finals (Tokyo, Japan)
Hackceler8 2022 (Google CTF Finals) (London, UK)
Cyber Mimic Defense 2019 (Nanjing, China)
DEF CON CTF 2018 (Las Vegas, USA)
Google CTF 2017 Finals (Zurich, Switzerland)
Codegate CTF Finals 2017 (Seoul, South Korea)
WCTF 2017 (Beijing, China)
SECCON 2017 Finals (Tokyo, Japan)
Trend Micro CTF 2017 - Raimund Genes Cup - The Final (Tokyo, Japan)
DEF CON CTF 2016 (Las Vegas, USA)
SECCON 2016 Finals (Tokyo, Japan)
Trend Micro CTF Asia Pacific & Japan 2015 Final (Tokyo, Japan)
DEF CON CTF 2014 (Las Vegas, USA)
SECCON 2014 Finals (Tokyo, Japan)
SECUINSIDE CTF Finals 2014 (Seoul, South Korea)
No cON Name Facebook CTF Finals 2013 (Barcelona, Spain)

Talks

Attack & Defense形式のCTFでリアルタイムの攻防戦を体験してみよう (Security Camp Mini Osaka 2026)
Webフロントエンドの脆弱性つまみ食い 2024年版 (Offers DeepDive 2024)
業務で役に立ったCTFテク (IERAE NIGHT 2024)
ソースコード解析によるWebアプリケーションの脆弱性調査 (Security Camp 2023)
マイクロサービス／分散モノリス的アーキテクチャへの攻撃手法 (Security Camp 2022)
LINE Security Bug Bounty Program (LINE Developer Day 2019)

tyage