This paper addresses the development of encryption during and after the Cold War, as well as the role that the development of encryption has played and continues to play in the overall public security and how it is regulated, including the issues encountered in the past and present. The paper presents the possibilities and uses of modern encryption based on the background obtained from its development through history. The topic is illustrated through research based on selected literature and analysis of materials that contribute to the understanding of information security and encryption problems. By comparing existing materials and records, the contribution to society through new and old technologies is explained, and the potential dangers in the field of security are highlighted. Events that have contributed to the development of technology and social shifts are also described in detail, explaining their role within the chosen topic. The hypothesis of the paper is that encryption becomes one of the central fields of interest in the information world, and over many years, its relevance, necessity, and dangers have been questioned.