Cyber security deals with all aspects of security in information and communication technology (ICT), such as all technologies connected to the internet and comparable networks, and includes communication, applications, processes and processed information based on ICT. Public security is one of the responsibilities of governments, i.e. safeguarding their citizens and other persons in their territory, organisations and institutions against threats to their general welfare and to their communities鈥 prosperity. The first part of this online course deals with cybersecurity governance in Europe and provides an overview of the main institutions dealing with cybersecurity, such as the EU Directorate-General Connect, the agencies ENISA and BSI and their tasks. The second part contains examples of European cybersecurity legislation and the underlying process, detailing the cybersecurity directive on network and information security (NIS directive), the regulation on electronic identification and trust services for electronic transactions (eIDAS), the General Data Protection Regulation (GDPR) and their implementation. The third part gives an overview of relevant ICT sectors and players, including the topics venture capital and acquisitions in the cybersecurity business. Current discussions on digital sovereignty and examples such as the 5G technology round up this course, concluding with an outlook on the Digital Europe Programme.