The 5G mobile system is a culmination of technological evolution including IP based services, virtualization, the rise of smartphones, IoT, the convergence of wired & wireless networks and much more. With the evolution of 5G mobile connectivity, its security mechanism needs to adapt to a wide range of users and technological shifts. This book provides a simplified view of 5G security, bridging the gap between complex technical standards and practical understanding. Technical topics covered in this book include: • Holistic aspects covering people, process and technology • Primary and secondary authentications • Slice authentications • Application-oriented authentication and key management support called AKMA • Non-3GPP access and converged wireline–wireless authentication • Non-public network • UAV USS authentication and authorization • Variability in 5G security feature adoption • 5G optional feature, privacy, roaming etc. and associated considerations As mobile networks have become an integral part of modern society and critical infrastructure, this book is a timely insight into how 5G security is structured, applied and shaped by the technological and regulatory forces.