In recent decades, the production of information in studies and research papers on the subject of cybersecurity have addressed the convenience of developing cyberdefense capabilities regardless of whether the scope is industrial or military, corporate or State. However, despite the generation of policies to contribute to the synergy of protection, cybersecurity threats continue to grow, affecting all organizations regardless of their size. The article deals with the existing guidelines, policies and environments within the international framework of cybersecurity in the maritime environment and identifies how these are taken through particular measures to the environments of military maritime units.