The development of technologies, the use of technologies in different interrelated areas such as smart cities, IOT platforms as well as new realities that global pandemic brought with it requires new approach to Cybersecurity of Critical Information Infrastructures. All this interrelations that almost made all critical information infrastructures to work as a whole body as well as pandemic challenges brought new cyber realities in securing and managing networks in critical information infrastructures. And this reality brought a new risks which haven’t measured and considered before. Taking into account all new realities, critical information infrastructures, their identification and evaluation models, security issues of these infrastructures, as well as the segregation of critical infrastructures by degree of importance requiring a comprehensive and new approach. The article describes the importance of consideration the interrelations as well as pandemic realities for the governance of Cybersecurity in CII.