Reliability Analysis of a System with Cyber Attack  
Author Mitsuhiro Imaizumi


Co-Author(s) Mitsutaka Kimura


Abstract Recently, the case that malware enters into an organization’s LAN through e-mail and so on, has become a serious problem. It is important to detect the attacks and to address them as soon as possible, however it takes a lot of time and cost to monitor and analyze the log data. Therefore, in terms of monitoring, it is necessary to implement it under appropriate management policy. This paper considers optimal monitoring policies for a system with cyber attack. One is the model where the loss cost between attack occurrence and its detection increases with time linearly, the other is the model where it increases with time non-linearly. The expected cost until the detection of attack is derived. Further, optimal policies which minimize the expected cost are discussed. Finally, numerical examples are given.


Keywords Cyber Attack, Malware, Expected Cost, Optimal Policy
    Article #:  2070
Proceedings of the 20th ISSAT International Conference on Reliability and Quality in Design
August 7-9, 2014 - Seattle, Washington, U.S.A.