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This link recently saved by jm on February 09, 2011
'When demonstrating FareBot, many people are surprised to learn that much of the data on their ORCA card is not encrypted or protected. This fact is published by ORCA, but is not commonly known and may be of concern to some people who would rather not broadcast where they’ve been to anyone who can brush against the outside of their wallet. Transit agencies across the board should do a better job explaining to riders how the cards work and what the privacy implications are.' (via Boing Boing)
This link recently saved by jm on August 13, 2008
a fantastic prez by 3 MIT students working under Ron Rivest, successfully hacking the Boston subway system's stored-value magstripe cards and MIFARE Classic RFID cards; really fantastic walkthrough of the process. I'm glad to see that my smartcard work on other systems a few years back would have defeated many of these attacks ;)
This link recently saved by jm on August 07, 2008
This link recently saved by jm on July 08, 2008
This link recently saved by jm on March 14, 2008
This link recently saved by jm on January 21, 2008
the new transit card system in Holland, OV-chipkaart, has been dramatically and thoroughly cracked by two separate teams (1 on the no-crypto Mifare Ultralight card, 1 on the with-crypto Mifare Classic). Ed F wraps up the details very nicely