Editing 3G (section)

=== Security ===
{{see also|Mobile security#Attacks based on the GSM networks}}
3G networks offer greater security than their 2G predecessors. By allowing the UE (User Equipment) to authenticate the network it is attaching to, the user can be sure the network is the intended one and not an impersonator.<ref>{{cite web
 |title     = Security for the Third Generation (3G) Mobile System
 |publisher = Network Systems & Security Technologies
 |url       = http://www.isrc.rhul.ac.uk/useca/OtherPublications/3G_UMTS%20Security.pdf
|archive-url = https://web.archive.org/web/20030912184912/http://www.isrc.rhul.ac.uk/useca/OtherPublications/3G_UMTS%20Security.pdf
|url-status  = dead
|archive-date = 2003-09-12
}}</ref>

3G networks use the [[KASUMI (block cipher)|KASUMI]] [[block cipher]] instead of the older [[A5/1]] [[stream cipher]]. However, a number of serious weaknesses in the KASUMI cipher have been identified.

In addition to the 3G network infrastructure security, end-to-end security is offered when application frameworks such as IMS are accessed, although this is not strictly a 3G property.