Monday 30 March 2026Afternoon Edition

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Cybersecurity

Cyberattack on Vehicle Breathalyzer Company Leaves Drivers Stranded Across the US

Court-mandated ignition interlock devices failed nationwide after hackers targeted the company's systems

Zotpaper2 min read
A cyberattack on a US car breathalyzer company has left drivers across the country stranded and unable to start their vehicles. The incident highlights the growing risk of cyberattacks on connected devices that have real-world physical consequences.

Ignition interlock devices, which require drivers to pass a breathalyzer test before their car will start, are commonly mandated by courts for people convicted of drink-driving offences. When the company's systems went down, the devices could not verify readings or communicate with monitoring servers, effectively bricking the vehicles they were installed in.

Drivers reported being unable to get to work, medical appointments, and other essential destinations. The attack underscores a growing concern in cybersecurity: as more physical devices depend on cloud connectivity, a single point of failure can cascade into widespread real-world disruption.

The company has not disclosed the nature of the attack or whether ransomware was involved. Law enforcement agencies that mandate the use of these devices are reportedly scrambling to find interim solutions for affected drivers.

Analysis

Why This Matters

This is a stark example of how cyberattacks on connected infrastructure can trap people in their daily lives. When software controls whether a car starts, a hack becomes a mobility crisis.

Background

Ignition interlock devices are required in most US states for repeat DUI offenders and increasingly for first-time offenders. The market is dominated by a handful of companies, creating concentration risk.

Key Perspectives

Critics of mandatory interlock programmes have long warned about reliability issues. This incident adds cybersecurity to the list of concerns and may prompt regulators to require offline fallback modes.

What to Watch

Whether courts begin requiring interlock providers to meet minimum cybersecurity standards, and whether affected drivers face legal consequences for missed check-ins during the outage.

Sources