washington.edu Domain Breach Exposure Report

The domain washington.edu experienced a significant number of events, with over 60,000 total occurrences. A substantial portion of these events, approximately 91%, are categorized as historical data breaches, while the remaining 9% are active infostealer logs. The timeline indicates a sharp increase in employee-related events in January 2026, coinciding with a surge in client-related events in September 2025 and March 2026. Malware families such as LummaC2, Redline, and Rhadamanthys were prevalent. The data also points to "Combolist sources" and "Database dumps" as significant leak repository classifications, suggesting credential stuffing or data exfiltration risks. Targeted services include authentication portals like idp.u.washington.edu and educational platforms like practiceit.cs.washington.edu. Given the high volume of historical data breaches and active infostealer logs, coupled with the prevalence of credential-harvesting malware and the identification of combolists and database dumps, this exposure presents a critical risk. The concentration of events on authentication and educational services indicates a potential for widespread account compromise and unauthorized access to sensitive information. Prioritization should focus on immediate remediation of identified vulnerabilities, enhanced credential security measures, and comprehensive monitoring for further compromise, particularly concerning employee and client data.