The V4 Cooperation in Ensuring Cyber Security - Analysis and Recommendations publication is aimed at conducting scrutiny of the state of cyber security in the Czech Republic, Slovakia, Hungary and Poland, and at presenting recommendations that serve its reinforcement. Moreover, the publication includes the most important information on cyber space protection and a review of the actions in that area which are undertaken within NATO and the EU. It also constitutes a valuable material for the decision-makers who, on the basis of the presented analysis, have an opportunity to build proper political solutions. The publication serves as a source of knowledge for all those interested in new trends in the international security sphere.