We studied the most secure static encrypted nonce variant of "MIFARE Classic compatible" cards -- meant to resist all known card-only attacks -- and developed new attacks defeating it, uncovering a hardware backdoor in the process. And that's only the beginning...
French security services firm Quarkslab has made an eye-popping discovery: a significant backdoor in millions of contactless cards made by Shanghai Fudan Microelectronics Group, a leading chip manufacturer in China.
