Shintaro Kobori
Penetration Tester
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolShintaro Kobori is a bilingual (Japanese/English) security engineer and penetration tester with 12 years of experience securing consumer platforms and corporate infrastructure across Tokyo-based companies. Holding CISSP, OSCP, and GCFE, he has led red team operations, developed adversary-emulation tooling, and ran purple teaming and detection engineering at Woven by Toyota. Previously at pixiv and DeNA he built bug bounty programs, redesigned authentication systems, deployed zero-trust remote access, and operated CSIRT and detection platforms for services with tens of millions of users. He also contributes to open-source projects such as the Chinachu DVR—bringing back-end engineering chops to his security work, including modular refactors and user-facing subtitle improvements. Pragmatic and hands-on, he blends software development skills with advanced offensive security expertise to improve resilience across applications, devices, and enterprise networks.
12 years of coding experience
8 years of employment as a software developer
Bachelor of Information Engineering, Bachelor of Information Engineering at University of Tsukuba
Japanese, English
Github Skills (6)
nodejs10
javascript10
back-end-development10
vcr10
software-design9
file-handling9
Programming languages (7)
Github contributions (5)
Chinachu/Chinachu
Feb 2015 - Mar 2016
Japanese DVR Software.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 commits, 4 PRs, 1 comment in 1 year 1 month
Contributions summary:Shintaro primarily contributed to the back-end logic of the Chinachu DVR software. They implemented features such as zero-padding for episode numbering, allowing for more flexible file naming formats. The user also introduced functionality to configure `recordedFormat` per rule and refactored code for improved modularity. Additionally, the user made adjustments to the display of subtitles in the web interface.
epgjavascriptisdbjapanesedvr
shinkbr/dotfiles
Mar 2014 - Jul 2022
Contributions:181 commits, 141 pushes in 8 years 4 months
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