Legion Security

Legion Security is a privately held cybersecurity company founded in 2024 and headquartered in New York, with operations in Tel Aviv, Israel. The company develops a browser-native AI SOC analyst platform designed to learn and scale the workflows of security operations center teams. Legion's core product deploys as a browser extension that observes... analyst investigations in real time, captures organizational tribal knowledge, and converts it into dynamic playbooks that can be replicated at scale across the team. Its AI Investigator product extends this capability to complex, open-ended investigations that require contextual reasoning beyond predefined playbooks, operating across SIEM, EDR, threat intelligence platforms, and legacy tools without requiring custom integrations or APIs. The platform is designed to reduce alert fatigue, lower mean time to respond, and improve investigative consistency across enterprise security teams. Legion Security is backed by Accel, Coatue Management, and other investors, having raised approximately $37.8 million to date.Read More