Tomoo Yamauchi

Former Director-General for Cyber Security, Ministry of Internal Affairs and Communications /
Visiting professor, Kochi University of Technology /
Adviser, LAC Co. Ltd

Tomoo YAMAUCHI is currently working for LAC Co., Ltd., which provides cybersecurity services. He is responsible for providing cybersecurity and security-related advice and proposals concerning external affairs activities and overall security measures for the company. Until July 2025, he worked as Director-General for cybersecurity and CISO, MIC (Ministry of Internal Affairs and Communications). He was also involved in considerations and Diet deliberations regarding the use of communications data under the “Cyber Response Capabilities Enhancement Act,” which was enacted in 2025. Between 2016 and 2021, he was in charge of Cybersecurity as Deputy Director-General and Counsellor of NISC (National center of Incident readiness and Strategy for Cybersecurity), Cabinet Secretariat. At NISC, He was in charge of preparing Cybersecurity Strategies 2018 and 2021, incident response coordination for 2020 Tokyo Olympic and Paralympic Games, amendment of Cybersecurity Basic Act and preparing Critical Infrastructure Action Plan. Before that, he was in charge of policies regarding R＆D and promotion of space communications at MIC. In addition, he has a variety of experiences in ICT policies. His previous assignments include radio wave policies such as land, maritime, aeronautical and satellite mobile communications.