autotrader.co.uk Domain Breach Exposure Report

The telemetry indicates a significant exposure event impacting autotrader.co.uk, with a total of 56,433 events recorded over the period. The majority of these events, 87.9%, are historical data breaches, affecting 49,617 entities, likely clients. Additionally, 12.1% of events, totaling 6,816, are active infostealer logs, also primarily targeting clients. The timeline shows a surge in client-related events in September 2025 and March 2026, with a notable spike in employee-related events in January 2026. The primary malware families associated with these infostealer events are LummaC2, Redline, Acreed, and Rhadamanthys, all known for credential harvesting. Given the high volume of historical data breaches and active infostealer activity, the risk to autotrader.co.uk is critical. The prevalence of credential-harvesting malware suggests a focus on compromising user accounts, which could lead to further unauthorized access and data exfiltration. Remediation efforts should prioritize securing client and employee credentials, enhancing authentication mechanisms, and conducting thorough investigations into the identified data breaches and infostealer infections. The data suggests a strong concentration of activity originating from the United Kingdom.