security for the third generation 3g mobile system colin blanchard network systems security technologies btexact. access and use of service to avoid or reduce a legitimate charge. · loss of confidentiality or integrity of a user’s or operator’s data · denial of a specific user’s access to their service or denial of access by all users to a service however user expectations for instant communication and ease of use as well as terminals which are easily lost or stolen present a number of unique challenges in the mobile environment. the original first generation analogue mobile employed a simple electronic serial number to confirm that the terminal should be allowed access to the service. it was not long before the protection afforded to this number was broken. eventually devices appe

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