Cyberattack Disrupts Ignition Interlock Devices, Leaving Drivers Unable to Start Their Cars

A cyberattack on March 14, 2026, targeted Intoxalock, an Iowa-based company that provides ignition interlock devices to individuals convicted of DUI. These devices are required in some states for people to drive legally, as they measure alcohol levels before starting a vehicle. However, the cyberattack caused a disruption in the company’s systems, leading to the inability for some users to calibrate their interlock devices on time, which in turn locked them out of their cars. This affected drivers across multiple states. In response, Intoxalock extended calibration deadlines for up to 10 days, though the fix wasn’t available to all users or states. The company also agreed to cover any costs resulting from the disruption, including towing fees. By March 22, the systems were restored, but the incident has caused frustration, with some users turning to Reddit to share their experiences and discuss possible legal actions. The situation has raised concerns about the reliance on external systems for critical driving functions, highlighting potential risks in case of a future cyberattack.