UMTS security

The Universal Mobile Telecommunications System (UMTS) is one of the new ´third generation´ mobile cellular communication systems. UMTS builds on the success of the ´second generation´ GSM system. One of the factors in the success of GSM has been its security features. New services introduced in UMTS require new security features to protect them. In addition, certain real and perceived shortcomings of GSM security need to be addressed in UMTS. This paper surveys the major security features that are included in the first releases of the UMTS standards.