Mihoko Matsubara is Chief Cybersecurity Strategist of NTT Corporation, Tokyo, being responsible for cybersecurity thought leadership. Mihoko worked at the Japanese Ministry of Defense before completing her MA at the Johns Hopkins School of Advanced International Studies on Fulbright.

Most recently, Mihoko was the Vice President and Public Sector Chief Security Officer for the Asia-Pacific region at Palo Alto Networks. She is Associate Fellow for Cyber at the International Institute for Strategic Studies, London; and Adjunct Fellow at the Pacific Forum, Honolulu.

Mihoko published a book on cybersecurity in Japanese from the Shinchosha Publishing Co., Ltd. in 2019. In 2020, her book won an award by the Okawa Foundation for Information and Telecommunications. Her second book, Ukraine’s Cyber War, was published from Shinchosha in August 2023. Her second book was published to describe the cyber war in Ukraine and its implications to Japan and Taiwan in August 2023, and awarded by the Digital Policy Forum.

Her chapter, “Japan’s 5G Security Strategy and Competition in Emerging Technologies,” is included CSIS Japan Chair’s book, Toward a U.S.-Japan Technology Alliance: Competition and Innovation in New Domains (Rowman & Littlefield, December 2022).