The 5G technology brings big concerns to the cybersecurity as will be more easy to use malware and tools to hacker system for spying, data stealing and malware attacks. China is the leader of this technology and is prepared to interfere with the sovereignty of other counties through communications systems. Ensuring the integrity, reliability and robustness of industrial, smart cities, administration and national defence communication is a mandatory requirement. At the same time, important architecture and design specifications for 5G are currently being defined. Security cannot be implemented later. It must be integrated into the design from the very beginning in order to achieve the above-mentioned goals and thus the industrial suitability. The companies want customization of the standard in their industrial applications - especially for security mechanisms. Only by incorporating security into standardization as early as possible can this flexibility and the added value for users be realized. In a simple way 5G will be explained for a better understanding and discussion of this important issue of cybersecurity.