Legion Security
Browser-native AI SOC analyst that learns how a security team actually investigates alerts through a browser extension, then automates those workflows with or without supervision.
About Legion Security
Legion Security, founded in 2024 and based in New York City, captures security expertise where analysts already work: the browser.
A lightweight extension uses vision models to watch investigations, learns each analyst's steps and decisions, and turns them into workflows the team can review and refine.
Those workflows then run on the team's existing tools, under human supervision or fully autonomously, to triage alerts, filter false positives and respond to threats.
Because it works through the browser, it can use any web-accessible platform, from email and SIEM to threat intelligence and homegrown internal tools. The company says it has been adopted by Fortune 500 organizations in energy, finance and healthcare.
Investors
Work at Legion Security? Link to this listing
Optional badge for your site or README. It changes nothing about the listing, its order or its review. Other formats and a dark version: press kit.
<a href="https://securitystartups.com/companies/legion-security"><img src="https://securitystartups.com/badge/listed.svg" alt="Listed on Security Startups" width="184" height="44"></a>