Better source: https://www.bleepingcomputer.com/news/security/ransomware-infects-electronic-door-locking-system-at-austrian-hotel/ https://www.bleepingcomputer.

Better source: https://www.bleepingcomputer.com/news/security/ransomware-infects-electronic-door-locking-system-at-austrian-hotel/ https://www.bleepingcomputer.com/news/security/ransomware-in... "We were hacked, but nobody was locked in or out," the hotel's Managing Director Christopher Brandstaetter told Bleeping Computer. "For one day we were not able to make new keycards."