joomla.org Domain Breach Exposure Report

The telemetry indicates a significant exposure event with 47,196 total events recorded between July 2025 and June 2026. The majority of these events, 84.1%, are historical data breaches, totaling 39,712 incidents. Additionally, 7,484 events, representing 15.9% of the total, are attributed to active infostealer logs. The data suggests a substantial compromise affecting 47,048 clients and 148 employees. The timeline shows a notable increase in employee-related events starting in January 2026, peaking in April 2026 with 51 employee events. Malware families commonly associated with these events include LummaC2, Redline, and Rhadamanthys, all of which are known for credential harvesting and data exfiltration. The leak repository classification indicates that 99.8% of the data originates from "Combolist sources," suggesting a large-scale credential stuffing or account takeover campaign rather than a direct breach of the joomla.org infrastructure itself. The targeted services are primarily related to Joomla forums and launch platforms, indicating potential phishing or credential harvesting attempts targeting users of these services. Given the high volume of historical data breaches and active infostealer logs, coupled with the involvement of common infostealer malware families, this exposure poses a high risk. The primary concern is the potential for widespread account compromise and sensitive data exfiltration affecting both clients and employees. Remediation efforts should focus on immediate credential rotation for all affected users, enhanced monitoring for suspicious login activity on Joomla-related services, and user education regarding phishing and credential security. The prevalence of "Combolist sources" suggests that the immediate threat may stem from compromised credentials being used in attacks against Joomla services, rather than a direct compromise of joomla.org's internal systems.