The success of the Russian Federation in Ukraine and the annexation of Crimea attest to the fact that the hybrid warfare constitutes an effective tool for achieving political objectives. This article evaluates the nature of hybrid warfare based on theoretical publications on the art of war and doctrinal documents of the Russian Federation, and characterizes the practical dimensions of hybrid warfare. It can be concluded on that basis that hybrid warfare and organized crime constitute real threats to European safety and security. International organizations such as NATO and the European Union so far have not drawn up neither the strategy nor effective tools for countering these phenomena.