Artemis Security

AI-native cybersecurity platform for modern security operations, positioned as a next-generation SIEM replacement that can also complement existing SIEMs. Builds a continuously updated, living model of a customer's environment — identity, cloud, endpoint, network, and SaaS — and uses AI agents to generate environment-specific detections, autonomously hunt and investigate threats, correlate signals into full attack narratives, and recommend or execute response, with the stated aim of sharply reducing mean-time-to-detect and mean-time-to-respond against AI-speed attacks. Founded in 2025 by CEO Shachar Hirshberg (previously at Demisto and Palo Alto Networks, and lead of AWS GuardDuty) and CTO Dan Shiebler (former head of AI at Abnormal Security; ML PhD from Oxford). Early customers include Mercury, Wix, Lemonade, and Abnormal. Emerged from stealth in April 2026 with $70M in combined seed and Series A funding, the Series A led by Felicis with First Round Capital, Brightmind, Theory VC, Two Sigma, and Lockstep. Legal entity: Artemis Global Technologies, Inc.