Globalisation brought an electronic communications reliance, as well as some repercussions on the world’s states, mainly in the sphere of cyber security. In recent years after the events in Ukraine, the cyber threat became a certainty and risk. We must be conscious that cyber attacks will grow up considerably, and one of their forms is the hybrid war, with its conventional and non-conventional, military and non-military capabilities. The emergence of a new battlefield – the cyberspace – is a reality, where military operations are carried out through sophisticated technology. For this purpose, states need to increase their cyber defence capabilities to prevent and combat aggression from the virtual environment to critical infrastructure, communications systems, and last but not least, the people.