Hisashi Oguma received the B.E., M.E., and Ph.D. degrees in computer science from the University of Electro-Communications, Tokyo, Japan in 1997, 1999, and 2002 respectively. In 2002 he joined NTT DoCoMo, Inc., Kanagawa, Japan, where he was engaged in research on ubiquitous services using sensor networks and mobile terminal security. In 2007 he joined Toyota InfoTechnology Center Co., Ltd., Tokyo, Japan. He is currently a group leader of cybersecurity group in solution research division. His current research interests include cybersecurity technologies related to vehicular system. He is a member of IPSJ.