"Security Breach: Hackers Crack 3 Million Hotel Keycard Locks in Seconds"
Originally Published 1 year ago — by WIRED
Security researchers have uncovered a technique called Unsaflok that allows hackers to open millions of hotel rooms worldwide in seconds by exploiting vulnerabilities in Saflok-brand RFID-based keycard locks. The technique involves obtaining a keycard, reading a certain code, and then writing two keycards of their own, allowing intruders to open any door in the hotel. While the lock manufacturer Dormakaba is working on a fix, only 36% of installed locks have been updated so far, and the full fix may take months or even years to roll out. Hotel guests can check if their locks are vulnerable using the NFC Taginfo app and are advised to take precautions until the issue is fully resolved.