Security for 5G Communications

Security has recently become an important issue that needs to be addressed in an era where governments are investing heavily into preventive measures against cyber‐crime that includes denial of service attacks, tampering attacks and eavesdropping attacks, among others. These types of malpractice are foreseen as threats in future 5G scenarios, since confidential information will be downloaded, uploaded and processed via the upcoming 5G systems. Furthermore, the emergence of the 5G era requires the integration of multiple existing advanced technologies with innovative new techniques, which will result in many security breaches. Thus, in this chapter, we present representative examples of potential threats and attacks against the main components of 5G systems in order to shed light on the future security issues and challenges in the upcoming 5G era.