Where we are in 5G Security - from early requirements until today

5G mobile networks will have to support a variety of services, including control of critical infrastructures, Industry 4.0 factory communication or vehicular communication. There is no doubt that supreme, built-in security is required for maintaining the availability and integrity of the communication network and ensure the dependability that is essential for such mission critical services. Accordingly, demanding security requirements have been raised in early stages of the conceptual work. Since then, various research projects investigated 5G security aspects, and standardization is well on the way, with the first release of the 3GPP 5G System mostly frozen in June 2018. This presentation briefly revisits 5G security requirements, gives an overview of what has been achieved until now, and points out some areas for future 5G security research.