Artemis Raises $70M to Fight AI-Powered Cyberattacks With AI

NEW YORK: Artemis has raised $70 million in combined seed and Series A funding just six months after founding. The Series A was led by Felicis. First Round Capital, Brightmind, Theory VC, Two Sigma, and Lockstep also participated. Industry veterans from CrowdStrike, Palo Alto Networks, Microsoft, Okta, Demisto, and Abnormal AI joined the round individually.

The company is building an AI-native cybersecurity platform designed to detect and respond to AI-powered attacks in real time. Its pitch is direct, AI attacks now unfold in minutes, adapt continuously, and never execute the same way twice. Legacy rule-based systems cannot keep up. Writing a new detection rule takes a week. By then, the threat has already changed.

Artemis replaces that approach with a platform that models how each organisation actually operates. It generates detections automatically, investigates every signal, and correlates signals across cloud, identity, endpoint, and network systems. If a privilege escalation in Okta coincides with unusual API activity in AWS, Artemis surfaces a single coherent attack narrative, not two disconnected alerts.

CEO Shachar Hirshberg previously built and led AWS GuardDuty, the world’s largest cloud attack detection product. CTO Dan Shiebler was head of AI at Abnormal Security. Together they founded Artemis six months ago. Early customers include Mercury, Wix, Lemonade, and Abnormal AI, all signed through word of mouth before today’s public launch.

The company currently employs 30 people in New York. It plans to scale to 65 by end of 2026. The funding will expand engineering, research, and go-to-market teams as enterprise demand accelerates.