Today we hear more and more often about data protection: but what does it mean? The “protection” concerns natural persons and therefore, their data. The book takes us on a journey through the legislation on the protection of natural persons with regard to the processing of personal data provided for by the eu Regulation 2016/679 (GDPR), helping us to understand its historical evolution, the ethical and legal principles that guide it and the obligations related to the processing. We should not overlook the issue of information security, also given the most current methods of communication and the development of new tools that offer us connection possibilities through smartphones, e-mail and social networks, however, posing severe risks, especially for minors. The new technological frontiers (Blockchain, IoT, Big Data, Artificial Intelligence, Drones, Robotics) deserve attention mainly because of the impact on the natural persons and their data; adequate awareness is increasingly necessary also for a correct ethical approach to the issue. The book presents a new and innovative approach to data protection according to the relational model, which we defined DAPPREMO (acronym of Data Protection and Privacy Relationships Model) based on high mathematics as a function of reality analysis.