Ark's page

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Mathematics / Computer Science / Programming

Profile

Hi there 👋

  • Name:Takeshi Kaneko
  • Currently working as a web security engineer in Japan.

Accounts

  • GitHub:arkark
  • Twitter:@arkark_
  • Blog:XS-Spin Blog
  • LinkedIn:link

Interests

  • Web Security / Web Exploitation
  • Algorithms / Data Structures / Distributed Systems
  • Creative Coding / Generative Design
  • Mathematics / Algebra for Computer Science

Activities

  • SECCON CTF 2023 Finals
  • SECCON CTF 2023 Qualsauthor writeup
  • SECCON CTF 2022 Finalsauthor writeup
  • SECCON CTF 2022 Qualsauthor writeup
  • SECCON CTF 2021author writeup
  • 東京工業大学プログラミングコンテスト2019
  • 第4回ゲーム制作者交流イベントGAME3
  • 第3回ゲーム制作者交流イベントGAME3

CVE

  • CVE-2023-39319golang/go
  • CVE-2023-39318golang/go
  • CVE-2023-32314patriksimek/vm2
  • CVE-2023-32313patriksimek/vm2

Contests

Capture The Flag

Team: ./Vespiary

  • 2023

    • SEETF 2023: 3rd 🥉
    • TJCTF 2023: 1st 🥇
    • BSides Algiers 2023: 3rd 🥉
    • hxp CTF 2022: 5th

  • 2022

    • WeCTF 2022: 2nd 🥈 (Team: hogehogeErs)
    • CrewCTF 2022: 5th
    • zer0pts CTF 2022: 6th

  • 2021

    • BSides Ahmedabad CTF 2021: 1st 🥇
    • TSG CTF 2021: 3rd 🥉
    • DownUnderCTF 2021: 2nd 🥈
    • CakeCTF 2021: 2nd 🥈
    • BSides Noida CTF: 4th
    • Circle City Con CTF 2021: 2nd 🥈
    • Union CTF 2021: 5th

  • 2020

    • SECCON 2020 Online CTF: 7th
    • InterKosenCTF 2020: 3rd 🥉
    • TSG CTF 2020: 7th

  • 2019

    • SECCON 2019 CTF: domestic final

Web Tuning Contests

Team: shallowverse

  • ISUCON 11: qual 1st🥇 / final 6th
  • ISUCON 10: qual 2nd🥈 / final 9th

Competitive Programming

AtCoder: 1900+

  • 第一回日本最強プログラマー学生選手権: final
  • Battle Conference U30 #2019 PROGRAMMING BATTLE: final 3rd 🥉
  • DISCO presents ディスカバリーチャンネル コードコンテスト2019: final
  • CODE FESTIVAL 2018: THANKS final
  • 第4回 ドワンゴからの挑戦状: final
  • CODE FESTIVAL 2017: THANKS final
  • CODE FESTIVAL 2016: final

Heuristic Contests

  • ハル研究所 プログラミングコンテスト2020: 9th
  • ハル研究所 プログラミングコンテスト2019: 9th
  • ハル研究所 プログラミングコンテスト2018: 23rd
  • 第2回 RCO日本橋ハーフマラソン: final
  • ハル研究所 プログラミングコンテスト2017: 7th

Education

  • Master of Science, Dept. of Mathematical and Computing Science, Graduate School of Computing, Tokyo Institute of TechnologyApr. 2019 - Mar. 2021
  • Bachelor of Science, Dept. of Information Science, School of Science, Tokyo Institute of TechnologyApr. 2015 - Mar. 2019

Work Experience

Present

  • GMO Cybersecurity by Ierae, Inc.Security Engineer (Nov. 2022 - present)

Past

  • Ricerca Security, Inc.Security Engineer (Oct. 2021 - Sep. 2022)
  • Yahoo Japan CorporationData Platform Engineer (Apr. 2021 - Oct. 2022)

Student Part-Time Jobs

  • MC Digital, Inc.Software Engineer (Apr. 2020 - Oct. 2020)
  • Toyokumo, Inc.Software Engineer (Aug. 2018 - Sep. 2019)
  • OCTEC Inc.Software Engineer (Nov. 2017 - Jul. 2018)

Short Internships

  • 2019

    • VOYAGE GROUP, Inc.Sunrise 大規模サービス構築プログラム (3 days)
    • Wantedly, Inc.Wantedly Summer Intern, Infrastructure (3 weeks)
    • mixi, Inc.2Days Challenge (2 days)
    • Cookpad Inc.Cookpad Summer Internship 2019 10 Day Tech (2 weeks)
    • GREE, Inc.GREE Camp (2 days)
    • Cookpad Inc.Cookpad Spring 1day Internship 2019 コンテナコース (1 day)

  • 2017

    • HAL Laboratory, Inc.INTERNSHIP 2017 PROGRAMMER COURSE (1 day)
    • COLOPL, Inc.MASH UP エンターテインメントを追求する合宿型インターンシップ (3 days)
    • mixi, Inc.第6回 git challenge (1 day)
    • DeNA Co., Ltd.SUMMER INTERNSHIP ゲームエンジニアリングコース (3 days)