Akira Otsuka completed a Ph.D. at the University of Tokyo and served as a researcher at the National Institute of Advanced Industrial Science and Technology (AIST) from 2005 to 2017, where he led the Research Team for Security Fundamentals Technology (2006‑2010); he has been a professor in Instite of Information Security (IISEC) since 2017, while also serves part‑time lecturer positions at Tokyo University of Science (2009‑2011), Josai University (2015‑2022), JAIST (2016), and Osaka University (2022‑2025); he was a visiting scholar at the Bank of Japan, IMES (2020‑2021). He is a member of IEICE, IPSJ, JSAI, and IEEE, serves as an advisor to the IEICE BioX, leads the JNSA IAC3 and JSAI SIG‑SEC.