Security has become a key factor in everyday life, but also a key part of national and international policies. The Republic of Croatia, with its special geostrategic and geopolitical position, has been seen as key factor in regional security. The process of building Croatia's security system was built in the conditions of the Homeland War, and new components of national security had to be created from the bottom. Today, as a full member of NATO and the EU, Croatia already has its own experience and cooperation with other member countries and has defined its legislative framework, adopted all key documents from the National Security Strategy to the introduction of the new Homeland Security system. Croatia, like other countries today is facing numerous security challenges, so through its public security system, so it had to build it's resilience to them. Public security in Croatia can be viewed through various segments, but the emphasis in this paper is on the security of the highest state officials (protected persons) and the implementation of measures and actions to maintain their high level of security. The overall approach to this important work is made by public sector bodies (police, agencies) in charge of the security of the highest state officials who operate within the legislative framework and in accordance with the positive regulations of the Republic of Croatia. The paper presents and explains the basic tactics of police officers when securing and protecting the highest state officials, as well as the security measures that are taken for this purpose, both in the theoretical part and in the practical part. I would like to point out that the security of high government officials certainly affects the overall level of security of the country and its reputation in the international community.