COO

Yuki Shirahama

白濱 佑宜Security Specialist

Portrait of Yuki Shirahama

Studied information technology at a university in Fukuoka, then worked across development, threat hunting, and red team training for people new to IT. As part of a red team he has run AI red teaming assessments. A Registered Information Security Specialist, he works at the front line of security, and co-founded Arterect Inc. in March 2026 on the strength of analysis skills built in the field.

Profile

Name
Yuki Shirahama
Name in Japanese
白濱 佑宜
Position
COO/Security Specialist
Organisation
Arterect Inc.
Expertise
Threat hunting、Red teaming、AI red teaming、Information security、Security training
Credentials
Registered Information Security Specialist

Other members

Portrait of Hayate Esaki
CEOHayate Esaki江﨑 颯Representative Director

Learned game development at HAL Nagoya while studying at Nagoya Gakuin University. After several IT companies he joined Growth Link as an AI engineer, where he led generative-AI development built around Claude Code. In 2025 he served as team leader of the quantum computing research team at IBM Community Japan, and in March 2026 co-founded Arterect Inc.

Portrait of Tazuki Tawata
CTOTazuki Tawata多和田 鶴稀White Hat Hacker

Studied information technology at a technical high school and vocational college in Okinawa, then worked at both a major vendor and startups across web vulnerability assessment, threat hunting and engineer education. A certified white hat hacker, fluent in advanced attack techniques. He co-founded Arterect Inc. in March 2026 to systematise hands-on security practice and help build a safe AI society.