The European - March 27, 1997
Alarm Bells Ring over GSM
By Bob Emmerson
Are GSM calls secure? Calls made over digital cellular systems like GSM - the European digital mobile phone standard - are encrypted in order to ensure privacy. But alarm bells are ringing following the news that a team of American security experts have cracked the US digital code used to stop eavesdroppers hearing the signals sent from mobile phones to the network. This means that information entered via the keypad of the phone, for example credit card numbers, is no longer secure.
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