The computer revolution, the development of the Internet and personal computers, and their availability to a wider range of people has led to the emergence of computer crime. There is no universally accepted definition of cybercrime. One way to define it is according to whether the computer is a means of use or objective. The reasons for computer attacks are not necessarily finances, sometimes they are warnings to citizens, threat messages, obstructions to the operating system of a company, etc. The consequences of cybercrime harm innovation, trade and global economic growth. Various companies conduct employee training, and allocate huge financial resources with the aim of preventing cybercrime. Consideration its global character, the adoption of various measures for the purpose of protection against cybercrime could not be approached at the national level, but only at the international level. The Council of Europe's Convention on Cybercrime, signed in Budapest in 2001, is adopted, with the aim of protecting society from cybercrime by conducting a common criminal policy. With the emergence of cybercrime, there is also the development of a new type of crime. When regulating criminal acts, the Croatian Criminal Code complied with the obligations set out in the Convention and Directive 2013/40/EU on Attacks on Information Systems. The novelty is the Law on Cybersecurity, which entered into force on February 15, 2024. It is about the implementation of the Network and Information Security (NIS)2 directive of the European Union. The goal of the NIS2 directive is to ensure an equal level of cyber security in all EU member states.