Yusuke Osumi
Threat Intelligence Analyst
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolYusuke Osumi is a seasoned threat intelligence analyst with 12+ years of hands-on experience in CSIRT operations, penetration testing, vulnerability assessment, and takedown of phishing and fraud campaigns across major Japanese internet companies. He has led the creation of an in-house threat intelligence platform and ran threat analysis teams after the LINE–Yahoo merger, now continuing his work at SMBC Group. With a background in physics (MSc, Osaka University) and certifications including CISSP and CISA, he blends rigorous analytical thinking with practical security engineering. His career spans building security services, evaluating hacking tools, and operationalizing OSINT for incident response — and he also brings an unusual eye for detail as a scientific photographer.
12 years of coding experience
19 years of employment as a software developer
Master of Science - MS, 理学研究科物理学専攻, Master of Science - MS, 理学研究科物理学専攻 at Osaka University
japanese 日本語, english 英語, chinese 中国語, Korean, Indonesian
Github Skills (25)
hash7
steganography6
tld6
cracking6
stateless5
predict5
prng4
dns3
serverless3
cpu-load2
standard-library2
firefox-addon2
chrome-extension2
machine-learning2
mozilla-firefox2
Programming languages (3)
Github contributions (5)
ozuma/ipdomain
May 2019 - Aug 2022
Miscellaneous tools for IP/domain research.
Contributions:31 commits, 2 PRs, 28 pushes in 3 years 3 months
miscellaneousdnstlddomain
ozuma/133.0.0.0
Nov 2014 - Feb 2016
Contributions:2 commits, 1 push in 1 year 3 months
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