eSentire provides Managed Detection and Response (MDR) services to organizations globally. Founded in 2001, the company operates a 24/7 Security Operations Center that delivers threat detection, investigation, and response capabilities across multiple attack surfaces including endpoints, networks, logs, cloud environments, and identity systems. The company's Atlas Security Operations Platform combines AI-driven automation with human expertise from security analysts and threat hunters. The platform uses task-specific AI agents for threat investigation, extended detection and response (XDR) capabilities, and integrates with over 300 existing security technologies. eSentire's Threat Response Unit (TRU) conducts original threat research and provides proactive threat intelligence to customers. eSentire offers three MDR package tiers: Atlas Essentials for foundational coverage, Atlas Advanced for comprehensive protection, and Atlas Complete which includes cyber risk advisory services. The company provides additional services including Digital Forensics and Incident Response (DFIR) with unlimited incident response, and Continuous Threat Exposure Management (CTEM) programs for identifying security gaps. The company serves approximately 2,000 organizations across 80+ countries in various industries including insurance, construction, finance, legal, manufacturing, healthcare, retail, and government sectors. eSentire's service model includes automated threat blocking combined with human-led investigations, unlimited threat hunting, and incident handling. The company also operates a partner program for MSSPs, MSPs, and value-added resellers.