The security of Mifare Classic is terrible. That chip, the “Mifare Classic” chip, is used in hundreds of other transport systems as well-Boston, Los Angeles, Brisbane, Amsterdam, Taipei, Shanghai, Rio de Janeiro-and as an access pass in thousands of companies, schools, hospitals, and government buildings around Britain and the rest of the world. Every Oyster card has a radio-frequency identification chip that communicates with readers mounted on the ticket barrier. And the publication of this serious vulnerability actually makes us all safer in the long run. People might be able to use this information to ride for free, but the sky won’t be falling. NXP Semiconductors, the Philips spin-off that makes the system, lost a court battle to prevent the researchers from publishing. London’s Oyster card has been cracked, and the final details will become public in October.
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