In mobile communication services, since its conception as a signal to be transmitted with quality and security. The evolution of this concept applied to the 5G standard, which is a system composed of several architectural innovations, technologies, concepts to meet service requirements, implies validation of the security aspect. Using a methodology to obtain the materials to be analyzed and thus carry out a review of scientific publications with a restricted focus on safety. Its architecture, main services, security, risks and mitigations observed in this review, added with other sources so that we can compose a restricted view of the security of this standard compared to what was proposed and observed with its implementation evolution, seen in the reports issued. Finally, the discussions, proposals and conclusions obtained will be based on whether networks are composed of security at their origin, or whether security mechanisms are created through weaknesses created by the constant evolution of the complexity of these networks.