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Intoxalock cyberattack strands some US drivers; calibration services restored

A March cyberattack disrupted Intoxalock’s required ignition-interlock calibrations, leaving some US drivers unable to start their cars. Services resumed on 22 March. Follow device prompts and contact your service centre about any remaining lockout.

What to do

If your Intoxalock device still shows a lockout or overdue calibration, contact your service centre and follow the device prompts. Keep receipts for outage-related towing and ask Intoxalock about reimbursement; normal calibration fees remain payable. There is no customer software update to install for this incident.

What’s happening

A cyberattack beginning on 14 March disrupted Intoxalock’s ignition-interlock service systems in the US. These in-car breathalysers require regular calibration; some customers due for that maintenance were unable to start their vehicles during the outage. Intoxalock introduced 10-day extensions where permitted and promised to cover costs directly caused by the disruption, excluding ordinary calibration charges. It announced that installations, calibrations and service-centre support had resumed on 22 March, although locked-out customers could still need their vehicles taken for calibration. The attack method and whether customer data was stolen remain unconfirmed in the sources reviewed. Lawsuits followed: the Strahl proceedings were paused until February 2027, while a separate case had a response deadline extended in September. No final litigation outcome was established by the records reviewed through 3 November.

What
Breach
Affects
Intoxalock ignition-interlock calibration and installation services
Fixed in
Nothing to patch
Since
14 Mar 2026
Closed
17 Sept 2026

Timeline

  1. Update

    In Robert Million’s separate lawsuit against Intoxalock, the court extended the company’s deadline to respond to 26 October 2026. The reviewed docket does not establish a subsequent outcome.

  2. Update

    The court paused the Strahl proceedings until 1 February 2027 and required a status report by 22 January 2027.

  3. Update

    Oliver Strahl filed a federal lawsuit against Consumer Safety Technology, which trades as Intoxalock, in the Southern District of Iowa.

  4. Update

    Intoxalock announced that installation, calibration and service-centre support systems had resumed. Customers who missed calibration without receiving an extension still needed their vehicles taken to a service centre.

  5. Update

    Intoxalock introduced a process for affected customers to receive 10-day calibration extensions. It also said it would cover costs directly caused by the system pause.

  6. Made public

    Intoxalock publicly acknowledged a cybersecurity incident affecting its ability to serve customers and said it was investigating.

  7. UpdateNothing to patch

    The cyberattack began, disrupting Intoxalock’s calibration services. Some drivers whose devices needed calibration could no longer start their cars.

Sources

  1. Intoxalock Status CenterIntoxalock · 24 Mar 2026
  2. Intoxalock Resumes Service Following CyberattackCEoutlook · 23 Mar 2026
  3. Cyberattack on vehicle breathalyzer company leaves drivers stranded across the USTechCrunch · 20 Mar 2026
  4. CT drivers caught up in cyberattack on breathalyzer companyConnecticut Public · 22 Mar 2026
  5. Strahl v. Consumer Safety Technology, LLC — federal court docketJustia · 30 July 2026
  6. Million v. Consumer Safety Technology, LLC — federal court docketJustia · 17 Sept 2026
HARD Live follows this until it’s over: each change is added to the timeline with its source. Everything live · Everything from March 2026 · JSON · RSS