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Intoxalock Vehicle Breathalyzers Downed by Cyberattack, Leave Drivers Stranded 

ID: 0f3ce1e2-8c05-5e09-9561-99a5afbf2bd9

STIX ID: report--0f3ce1e2-8c05-5e09-9561-99a5afbf2bd9

Feed Name: Security Boulevard

Threat Score
55/100

Date Published: 2026-04-13

Date Updated: 2026-04-22

Author: Teri Robinson

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A March cyberattack against Intoxalock flooded the company’s servers and disrupted calibration and operation of its vehicle breathalyzer ignition interlock devices, leaving many drivers—reportedly across the Eastern U.S.—unable to start their cars for up to eight days; Intoxalock restored service by March 22, reported no ransom demand or customer data leakage, and provided roadside assistance and reimbursements to affected customers.

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