Browser-native artificial intelligence security operations center startup Legion Security Inc. today launched with an announcement that it has raised $38 million in funding to accelerate product development, expand customer deployment and grow its team to deliver automated security operations that learn from and mimic in-house analyst workflows.

The company was founded in 2024 by security veterans Ely Abramovitch, who’s chief executive officer, Michael Gladishev, who’s vice president of research and development and an alumni of Microsoft Corp., and AI founder and expert Eyal Fisher, who’s chief technology officer. It’s aiming to reimagine how enterprise security teams manage and scale up their operations with a browser-native, AI-powered SOC platform.

The Legion platform differs from existing solutions on the market through the use of a lightweight browser extension that learns directly from analysts by observing their day-to-day investigations. The idea is to allow the platform to capture the nuances of human expertise and translate them into scalable, automated workflows tailored to each organization’s unique tools and processes.

Legion uses a three-phase operational model that moves from passive observation to full automation.

In the initial “Learning Mode,” the platform shadows senior analysts and records how they handle alerts and make decisions. The next step, the “Guided Mode,” offers suggestions and performs tasks under human supervision.

Finally, when teams are ready, an “Autonomous Mode” allows Legion to act independently or with selective approvals, drastically accelerating response times and reducing manual workload without sacrificing oversight.

Analysts can configure exactly when and where Legion operates, restrict its access to certain tools and mask sensitive data during sessions. Every action taken by the AI is fully auditable and security teams retain final say over what is learned, applied or deployed.

The offering from Legion is positioned to solve a longstanding pain point in cybersecurity: the overwhelming volume of alerts and the shortage of qualified personnel to investigate them. By converting institutional knowledge into actionable automation, the platform helps reduce triage time, cut down on false positives and eliminate repetitive documentation work.

“Legion is the first browser-based platform designed to scale your team’s best instincts into AI-driven workflows,” said Abramovitch. “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.”

The Series A round was led by Coatue Management, with participation from Accel Partners LP and Picture Capital, the latter two having co-led an earlier seed round into the company.

“What sets Legion apart is its browser-native AI platform,” said Sri Viswanath, managing director at Coatue. “It studies how security analysts work and instantly scales those workflows, cutting investigation and response times by up to 90%. No rigid playbooks, no messy integrations.”

Image: Legion