Cybersecurity startup Legion on Wednesday emerged from stealth mode with $38 million raised in seed and Series A funding.
The company’s latest investment round was led by Coatue, with additional support from Accel and Picture Capital, which co-led the seed round, and angel investors.
Founded in 2024 by Microsoft Sentinel and Cambridge AI research alumni, New York City-based Legion has built a browser-native AI Security Operations Center (SOC) companion that helps organizations scale their investigations.
The browser extension, the company explains, observes a team’s investigations, learns their workflows, and helps improve them, automating the entire process at scale.
Legend’s AI agent aims to eliminate burnout by helping security teams triage alerts faster, filter false positives, and scale their expertise.
The platform relies on vision models and a lightweight browser extension to capture investigation patterns and record analysts’ decision-making processes, and then presents the workflows to the team, to help optimize them.
Legion’s solution can also leverage existing tools to investigate and respond to threats, either under human supervision or completely autonomous, and works with any platform accessible from the browser, such as email, SIEM, threat intel tools, and other internal, homegrown systems.
The company has already seen adoption among Fortune 500 organizations in the energy, finance, and healthcare industries.
“Legion is the first browser-based platform designed to scale your team’s best instincts into AI-driven workflows. It’s fully trained within your environment, by your team, for your team. Our goal is to turn your expertise into scalable automation, letting the security team focus on what’s really important,” Legion CEO and co-founder Ely Abramovitch said.
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