bldr.com Domain Breach Exposure Report

The domain bldr.com experienced a significant number of events, with 42,419 historical data breaches and 1,874 active infostealer logs recorded between July 2025 and June 2026. The majority of these events are linked to historical data breaches, comprising 95.8% of the total observed activity. Infostealer logs represent the remaining 4.2%. The timeline shows a peak in employee-related events in September 2025 and March 2026, with client-related events also peaking in September 2025. Malware analysis indicates a strong prevalence of Redline infostealer, accounting for 91.6% of identified malware families. Targeted services include various login portals and registration pages associated with bldr.com, as well as common enterprise services like Microsoft and Citrix. The geographical distribution shows a concentration of events in the United States, Netherlands, and Germany. Given the high volume of historical data breaches and the prevalence of infostealer malware, particularly Redline, the risk to bldr.com is critical. The extensive data breach history suggests a persistent vulnerability or a history of significant compromise. The active infostealer logs indicate ongoing threats to credential harvesting. Remediation should focus on comprehensive security audits, strengthening authentication mechanisms across all targeted services, particularly the identified login portals, and implementing robust endpoint detection and response to mitigate infostealer threats. A thorough review of past data breach incidents is also recommended to understand root causes and prevent recurrence.