Ayako Akiyama Hasegawa, Takuya Watanabe 0001, Eitaro Shioji, Mitsuaki Akiyama. I know what you did last login: inconsistent messages tell existence of a target's account to insiders. In David Balenson, editor, Proceedings of the 35th Annual Computer Security Applications Conference, ACSAC 2019, San Juan, PR, USA, December 09-13, 2019. pages 732-746, ACM, 2019. [doi]
Abstract is missing.