Intoxalock Security Breach Disrupts Drivers with Ignition Interlock Devices

A cybersecurity incident at Intoxalock, a leading provider of ignition interlock devices (IIDs), has left an estimated 150,000 drivers across the United States unable to start their vehicles. The breach, which began on Saturday, March 16, 2026, primarily affects individuals with prior driving under the influence (DWI) convictions who are legally required to use IIDs as a condition of their license reinstatement.

What Happened?

The security breach at Intoxalock prevents vehicles equipped with their devices from starting if recent calibration has not been completed. Calibration is required every two months for many users. The exact nature of the cybersecurity attack remains under investigation, and the timeline for a full resolution is currently unknown.

Who is Affected?

Novel York State law mandates the use of IIDs for individuals convicted of DWI offenses since 2009. Drivers with a past DWI conviction are required to have a breathalyzer device installed in their car to regain driving privileges. The disruption impacts those relying on Intoxalock to fulfill this requirement. Tina Ward, a resident of Canastota, New York, who received a DWI in 2010, is among those affected, facing difficulties attending scheduled medical appointments due to the vehicle lockout.

What is an Ignition Interlock Device?

An ignition interlock device (IID) is a breathalyzer installed in a vehicle that prevents the engine from starting if the driver’s breath alcohol content (BrAC) exceeds a pre-set limit, typically 0.02%. Drivers are required to provide breath samples before starting the vehicle and periodically even as driving to ensure continued sobriety. According to Norcal Interlock, approximately 150,000 people in the United States utilize IIDs.

Intoxalock’s Response and Reimbursement

Intoxalock has stated that it will reimburse customers for towing expenses incurred due to the vehicle lockout caused by the security breach. However, many drivers report limited communication from the company regarding the incident and its resolution.

Department of Criminal Justice Services Involvement

The New York State Department of Criminal Justice Services (DCJS) was notified of the “cybersecurity event” on Tuesday, March 18, 2026, and is monitoring the situation.

What are New York DWI Laws?

New York State has strict DWI laws with tiered penalties based on the driver’s blood alcohol content (BAC) and prior offenses:

• DWI: BAC of .08% or higher.
• Aggravated DWI: BAC of more than .18%.
• DWAI (Driving While Ability Impaired): BAC between .05% and .07%.

Leandra’s Law, passed in 2009, mandates IID installation for all individuals convicted of DWI in New York State.

Resources

• Intoxalock New York Requirements
• CNY Central: Breathalyzer company under security breach
• Norcal Interlock – Intoxalock
• NYS Qualified Ignition Interlock Device Installation/Service Providers