EN
The article presents cyber security aspect in terms of information resource protection taking into account the nowadays threats. A model of cyber security, type of threats and IT system security class have been outlined. One of the best way to solve the problem of cyber terrorism is the implementation of Information Security Management System (ISMS). In spite of different methodology, which could be used to implement ISMS, the paper clearly indicates that ISMS based on the international standard ISO/IEC 27001 is the best choice due to the system solution.