chs.net Domain Breach Exposure Report

The domain chs.net exhibits a critical risk score of 100, primarily driven by a significant volume of historical data breaches (54,100 events) and a substantial number of active infostealer logs (2,086 events) over the period of July 2025 to June 2026. The infostealer activity is dominated by the Redline malware family, accounting for 83.4% of observed malware. Employee credentials appear to be the primary target, with 53,505 employee-related events, alongside 2,681 client-related events. The data suggests a widespread compromise, with "Combolist sources" and "Database dumps" being the primary leak repository classifications, indicating credential stuffing and data exfiltration risks. Targeted services include various authentication endpoints for chs.net, particularly those related to "fs.sts.chs.net" and "mywork1.chs.net", suggesting potential compromise of single sign-on or identity management systems. The geographical breakdown shows a concentration of activity in the United States, Netherlands, and Germany. The high volume of historical data breaches and active infostealer logs, particularly Redline malware targeting employee credentials, presents an immediate and severe risk. The prevalence of "Combolist sources" and "Database dumps" in leak repositories indicates that compromised credentials are likely being actively traded or used in further attacks. Remediation efforts should focus on immediate credential reset for all identified employee and client accounts, enhanced monitoring of authentication systems for suspicious activity, and a thorough review of security configurations for services like ADFS and SSO endpoints. Given the nature of the data breaches and infostealer activity, a comprehensive incident response plan should be activated to investigate the full scope of the compromise and prevent further data loss or unauthorized access.