A Study on a Practical Measure against Billing Frauds. - Takehisa Kato; Kohei Nasaka; Takumi Yamamoto; Masakatsu Nishigaki (NBiS, 2011)

A Keystroke Logger Detection Using Keyboard-Input-Related API Monitoring. - Kohei Nasaka; Tomohiro Takami; Takumi Yamamoto; Masakatsu Nishigaki (NBiS, 2011)

A Proposal to Realize the Provision of Secure Android Applications - ADMS: An Application Development and Management System. - Harunobu Agematsu; Junya Kani; Kohei Nasaka; Hideaki Kawabata; Takamasa Isohara; Keisuke Takemori; Masakatsu Nishigaki (IMIS, 2012)