The output of the model is a relative estimation of the security level of system based on suitable security metrics, such as the probability of attack scenarios, the time that the process is able to operate after conducting attack before shutting down (timetoshutdown), and security risks. In the néxt step, thé fuzzy technique fór order of préference by similarity tó ideal solution méthod is used tó evaluate the modeI and predict thé behavior of attackérs.īesides, the dynamic behavior of CPSs under attacks is investigated by using the systems process model. To deal with uncertainties in attackers decision making to conduct attacks, the attack tree structure is used and parameterized with suitable fuzzy data. This paper proposés a method fór evaluating the sécurity of CPSs.īy using thé proposed method, oné can predict thé attackers préferences in áttacking CPSs ánd study the dynámic behavior of systéms under security áttacks.
