Intoxalock, an ignition interlock system that prevents drivers from drinking and driving, has been hit by a cyberattack that may affect some users' ability to drive. The company claims that hackers are overloading its servers, causing them to stop working. While the servers are affected, user data is safe. Future installations will be paused until March 20 and users with scheduled appointments can reschedule. A 10-day service extension is available in most areas as the company works to restore its system, but not on newer 2001A devices in Pennsylvania.