The world faces new challenges and threats to international security environment, among which a key role play different types of cyberthreats. This follows, primarily the global links in a cyberspace in terms of critical infrastructure of the state’s and intergovernment’s objects in the international security environment and the fact that the cyberaggressor’s tools are becoming cheaper, and their skills are more and more advanced. There is an urgent need for the analysis of present and future cyberthreats in the security environment, to understand their impact on everone, States, Nations and organizations and develop effective methods of response in this highly complex reality. The article presents the concept of defining of main types of cyberhreats (i.e. information warfare, cyberterrorism, cybercrime and cyberespionage) on the base of the new theoretical approach of modern security environment model.