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Chip and Skim: cloning EMV cards with the pre-play attack

The EMV (Chip & PIN) protocol requires ATMs and point-of-sale terminals to generate a random number. If this number (known in EMV terminology as the "unpredictable number") isn't random, Chip & PIN is left vulnerable to the "pre-play" attack, which is indistinguishable from card cloning to the bank which issued the card...

11 September 2012 /security /payments Information Security