Drawing on his diverse background, Tatsuya is currently focused on advancing AI-enhanced SOC and CSIRT operations at scale.
Prior to joining Sansan, he worked as an independent cybersecurity professional, delivering technical advisory services, threat hunting consulting, practitioner education, AI system development, and custom data visualization solutions. He also actively contributed to cybersecurity communities and open-source projects.
Beyond the engineering perspective, he strongly values maintaining the right balance between security and usability.
Tatsuya specializes in threat hunting, detection engineering, adversary evasion techniques, digital forensics, and incident response. He is a frequent speaker at industry conferences across the Asia-Pacific region, including the SANS APAC DFIR Summit, and is passionate about sharing practical knowledge that helps practitioners strengthen their real-world defensive capabilities.
His personal motto is: “Complacency is the enemy; keep moving toward new challenges.”
Certifications:
GSE #404, GSP #414, GX-FA, GX-FE, GX-IH, GX-CS, 10+ GIAC Practitioner Certifications (GCFA, GCFE, GNFA, GCFR, GREM, GCIH, GXPN, GPEN, GMOB, GSEC), CISSP, and CISA.
