Koji Nakao received the B.E. degree of Mathematics from Waseda University, in Japan, in 1979. Since then, Koji has been engaged in the research on information security technology for telecommunications including IoT security and 5G security. His present positions are "Distinguished Researcher" in NICT and “Guest Professor” of Yokohama National University on IoT security research. Koji has also been an Advisor of Cybersecurity for CABINET SECRETARIAT in Japanese government since April 2017.