bookingholdings.com Domain Breach Exposure Report

The telemetry indicates a significant exposure event impacting bookingholdings.com, with 34,084 total events recorded between July 2025 and June 2026. The vast majority of these events, 32,370 (95%), are historical data breaches, while 1,714 (5%) are active infostealer logs. Employee accounts are the most frequently compromised, totaling 33,705, with a notable surge in September 2025. Client accounts show a smaller but present exposure of 379. The primary malware family associated with infostealer activity is Redline, accounting for 99.7% of identified malware. The data suggests a broad compromise, with "Combolist sources" representing 99.1% of leak repository classifications, indicating credential stuffing or similar attacks leveraging previously breached credentials.