Primary Factors of Malicious Insider in E-learning Model. - Koichi Niihara; Hiroaki Kikuchi (HCI (26), 2016)

Sharing or Non-sharing Credentials: A Study of What Motivates People to Be Malicious Insiders. - Koichi Niihara; Michihiro Yamada; Hiroaki Kikuchi (HCI (22), 2017)

Decision Tree Analysis on Environmental Factors of Insider Threats. - Michihiro Yamada; Koichi Niihara; Hiroaki Kikuchi (HCI (30), 2017)

How Much is Risk Increased by Sharing Credential in Group? - Hiroaki Kikuchi; Koichi Niihara; Michihiro Yamada (STM, 2017)