Legion Exits Stealth with $38M in Cybersecurity Funding

Legion has emerged from stealth, securing a combined $38 million in Seed and Series A financing. The funding round was co-led by Accel and Picture Capital, with additional participation from Coatue and several angel investors. The company was founded by former managers from Microsoft's Sentinel cyber protection team.

The new capital will advance its AI-powered security operations center (SOC). Unlike competitors such as Palo Alto Networks and CrowdStrike that primarily monitor network or endpoint layers, Legion focuses specifically on detecting threats within the user's browser. This provides a different layer of defense against modern attacks.

A New Approach to Browser Security

Legion's founders created the company in 2024 to address gaps they observed in existing enterprise security solutions. Consequently, they developed a platform for advanced threat detection that can handle sophisticated, AI-driven cyberattacks that originate or operate through web browsers.

The company already serves dozens of customers, including a major financial institution.

This investment also marks the public debut of Picture Capital, a new venture firm. Its founders include executives from successful cybersecurity companies Island and Transmit Security.