Kazuyoshi Suzuki
ソフトウェアエンジニア at 株式会社カミナシ
Chiba, Japan
Summary
🤩
Rockstar🎓
Top SchoolKazuyoshi Suzuki is a software engineer based in Chiba, Japan, with eight years of experience building reliable, security-conscious systems. He has worked at ZOZO and is currently contributing to product engineering at Kaminashi, bringing practical production experience from fast-moving consumer tech. His open-source contributions to the Hayabusa threat-hunting tool show a focus on back-end security engineering—implementing PowerShell detection rules, command whitelisting, and forensic timeline integrations. With a master's in engineering from Ritsumeikan University, he combines academic rigor with hands-on coding and incident-aware design. Colleagues would describe him as the kind of engineer who pairs feature delivery with measurable improvements in detection and operational robustness. He stands out for weaving security telemetry work into backend services, not just as an add-on but as a core part of system behavior.
8 years of coding experience
修士（工学）, 修士（工学） at 立命館大学
Github Skills (10)
cybersecurity10
detector10
powershell10
rust10
detectors10
computer-forensics10
threat-hunting10
security-automation9
incident-response9
sigmajs9
Programming languages (5)
Github contributions (5)
Yamato-Security/hayabusa
Oct 2020 - Jan 2023
Hayabusa (隼) is a sigma-based threat hunting and fast forensics timeline generator for Windows event logs.
Role in this project:
Back-end & Security Engineer
Back-end & Security EngineerContributions:32 reviews, 85 commits, 11 PRs in 2 years 4 months
Contributions summary:Kazuyoshi primarily contributed to the security and back-end aspects of the Hayabusa project, which is a threat hunting and forensics tool. Their work involved implementing PowerShell rule detections, specifically focusing on events related to PowerShell activity. They added rules for identifying malicious PowerShell commands, integrated command whitelisting, and addressed thread-related issues. The user's contributions included modifications to existing detection logic and integration with other components.
dfirforensicsthreat-intelligenceninjahunting
itiB/itiB.github.io
Apr 2020 - Feb 2023
Contributions:51 PRs, 50 pushes, 35 branches in 2 years 10 months
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