sempra.com Domain Breach Exposure Report

The telemetry indicates a significant exposure event affecting sempra.com, with 41,089 historical data breaches and 1,801 active infostealer logs observed over the reporting period. The majority of these events are linked to "Combolist sources" (84.6%) and "Database dumps" (15.4%), suggesting credential stuffing and data leakage as primary vectors. The "Redline" malware family is overwhelmingly dominant among observed infostealer activity (95.3%). Employee accounts are the most frequently compromised, with 42,007 instances, followed by client accounts at 883. The timeline shows a surge in employee compromises during September 2025 and March 2026, with notable spikes in client compromises also occurring in September 2025. Targeted services include "sempra.com" itself, along with various authentication and remote access portals like Citrix and Microsoft ADFS, indicating potential for broad system compromise. Given the high volume of historical data breaches and the prevalence of infostealer activity, particularly Redline, this situation presents a critical risk. The extensive employee compromise data, coupled with the targeting of critical infrastructure services like Citrix, suggests a high likelihood of further unauthorized access and potential operational disruption. Prioritization should focus on immediate credential reset for all affected employees and clients, enhanced monitoring of authentication systems, and a thorough investigation into the source of the data breaches and infostealer activity. Remediation should include strengthening access controls, implementing multi-factor authentication across all services, and deploying advanced endpoint detection and response to counter infostealer threats.