Hardware Backdoor Discovered in RFID Cards Used in Hotels and Offices Worldwide

Cybersecurity researchers have uncovered a hardware backdoor within a particular model of MIFARE Classic contactless cards that could allow authentication with an unknown key and open hotel rooms and office doors. The attacks have been demonstrated against FM11RF08S, a new variant of MIFARE Classic that was released by Shanghai Fudan Microelectronics in 2020. "The FM11RF08S backdoor enables any