**1. Introduction**

Many extraordinary events and crises threaten the whole world. There were 281 disasters and 61.7 million people were affected by the natural disaster in 2018 in the whole world (based on the International Disaster Database). Next, there were about 1600 storms in 2018. These disasters often cause the power outage. These affect not only the lives, health, and property of citizens but also the subjects and elements of the critical infrastructure itself. Naturogenic or anthropogenic threats could cause it. The aim of each state is to protect its citizens and the necessary infrastructure of the country where systems called critical infrastructure can be considered. Breaking the critical infrastructure system would have a severe impact on the state's security, securing the basic living needs of the population, the health of the people, or the economy of the country. However, the critical infrastructure system must be viewed comprehensively [1].

There are many sectors of the critical infrastructure (see **Figure 1**).

In some cases, the disruption of the critical infrastructure has an impact on the next system. Rinaldi called this as the cascade effects [3]. Next, Rehak examined the cascade effects in the critical infrastructure system [4].

As with any network, a critical infrastructure system has elements with different levels of importance (criticality). The damage, disruption, or failure of an important
