Artemis

Artemis is an AI-native cybersecurity company founded in 2025 and headquartered in New York. It emerged from stealth the same year with $70 million in Series A funding. The company builds technology aimed at defending organisations against AI-powered, machine-speed attacks.

Its product, the Artemis Platform, constructs a continuously updated model of each customer's environment and uses AI agents to autonomously correlate signals, investigate threats and produce complete attack narratives with actionable context. It monitors five data-source domains - identity, cloud, endpoint, network and SaaS - and learns what normal behaviour looks like across each. The company positions the platform as a next-generation alternative to legacy SIEM systems such as Splunk; in early deployments it cut mean time to detect and respond by 94%.

Work at Artemis spans artificial intelligence, machine learning, threat detection and response, anomaly detection and AI agents, with coverage of identity, cloud, endpoint, network and SaaS security. The engineering culture is described as AI-native, and the company was founded by veterans of cybersecurity and AI. Its customers and market focus sit within cybersecurity, enterprise security and IT security operations.