Intoxalock: Cyberattack on vehicle breathalyser firm leaves drivers stranded across US

Cyberattack on Intoxalock Disrupts Vehicle Ignition Systems Nationwide

A cyberattack targeting Intoxalock, a U.S.-based provider of vehicle ignition interlock breathalyzers, has left drivers across the country unable to start their vehicles. The company, which supplies devices mandated for individuals with DUI convictions or alcohol-related restrictions, confirmed the incident on its website, stating it is "currently experiencing downtime."

Intoxalock’s systems integrate breathalyzer technology with vehicle ignition switches, requiring drivers to provide a negative alcohol reading before their cars will start. The disruption has impacted users who rely on these devices for legal compliance, though the full scope of the outage remains unclear.

No details have been released regarding the nature of the attack, the attackers’ motives, or whether ransomware or data theft was involved. The incident highlights vulnerabilities in connected vehicle safety systems and the broader risks of cyber threats to critical infrastructure. Further updates on recovery efforts are pending.

Source: https://inshorts.com/en/news/cyberattack-on-vehicle-breathalyser-firm-leaves-drivers-stranded-across-us-1774023454703

Intoxalock cybersecurity rating report: https://www.rankiteo.com/company/intoxalock

"id": "INT1774060112",
"linkid": "intoxalock",
"type": "Cyber Attack",
"date": "3/2026",
"severity": "100",
"impact": "5",
"explanation": "Attack threatening the organization's existence"

{'affected_entities': [{'customers_affected': 'Drivers with DUI convictions or '
                                              'alcohol-related restrictions',
                        'industry': 'Vehicle safety and compliance technology',
                        'location': 'U.S.',
                        'name': 'Intoxalock',
                        'type': 'Company'}],
 'description': 'A cyberattack targeting Intoxalock, a U.S.-based provider of '
                'vehicle ignition interlock breathalyzers, has left drivers '
                'across the country unable to start their vehicles. The '
                'company confirmed the incident on its website, stating it is '
                'currently experiencing downtime. Intoxalock’s systems '
                'integrate breathalyzer technology with vehicle ignition '
                'switches, requiring drivers to provide a negative alcohol '
                'reading before their cars will start. The disruption has '
                'impacted users who rely on these devices for legal '
                'compliance.',
 'impact': {'downtime': 'Nationwide disruption',
            'operational_impact': 'Drivers unable to start vehicles; legal '
                                  'compliance issues for users',
            'systems_affected': 'Vehicle ignition interlock breathalyzers'},
 'references': [{'source': 'Company website announcement'}],
 'response': {'communication_strategy': 'Website announcement'},
 'title': 'Cyberattack on Intoxalock Disrupts Vehicle Ignition Systems '
          'Nationwide',
 'type': 'Cyberattack'}