William Hiroyuki Saito (齋藤ウィリアム浩幸, born March 23, 1971)[1][2] is a Japanese American businessman, venture capitalist and former advisor to the government of Japan specializing in cybersecurity.
[2] He had appeared in the Japanese media as a physician, a start-up investor, and cybersecurity expert educated in the US.
But in 2017 he resigned from all public and several private sector positions,[3] after the falsification and misrepresentation of his career was reported, including the medical license and the degree of UCLA.
[2][7] After selling the I/O Software business, he moved to Japan, where he became active as a venture capitalist and invested in several Japanese start-ups.
[9] Saito was an advisor to Prime Minister Shinzo Abe on cybersecurity issues.