2025​

• May 30 - AlpacaMark: DOM Clobbering with Prototype Pollution and iframe's credentialless Trick
• September 8 - Forcing Quirks Mode with PHP Warnings + CSS Exfiltration without Network Requests

2024​

• September 4 - AlpacaHack Round 2 (Web) - 作問者writeup
• December 1 - AlpacaHack Round 7 (Web) - 作問者writeup
• December 30 - ASIS CTF Finals 2024: Author Writeups

2023​

• February 17 - SECCON CTF 2022 Finals: Author writeups
• March 9 - CTF作問感想 - 2022
• July 17 - zer0pts CTF 2023 writeup (4 web challs)
• September 21 - SECCON CTF 2023 Quals: Author Writeups
• December 28 - SECCON CTF 2023 Finals: Author Writeups

2022​

• March 27 - LINE CTF 2022 writeup (web challs)
• July 31 - UIUCTF 2022 writeup - web/spoink
• November 18 - SECCON CTF 2022 Quals: Author writeups - 日本語
• November 18 - SECCON CTF 2022 Quals: Author writeups - English
• December 17 - CTF: Best Web Challenges 2022

2021​

• March 9 - zer0pts CTF 2021 writeup (3 web challs)
• August 29 - CakeCTF 2021 writeup
• October 5 - TSG CTF 2021 writeup - Udon
• December 19 - RTACTF (SECCON Speedrun Challenge) crypto writeup
• December 22 - SECCON CTF 2021: Author writeups (4 web challenges)
• December 29 - SECCON CTF 2021 作問感想

2020​

• December 9 - ハル研究所プログラミングコンテスト2020 参加記
• December 27 - Harekaze mini CTF 2020 writeup for web challs