Stellar Cyber

Stellar Cyber provides an Open XDR platform designed to unify threat detection and response across network, endpoint, cloud, and identity telemetry sources, taking an explicitly vendor-agnostic approach that ingests data from a customer’s existing security tools rather than requiring them to rip and replace their current stack. This “open” positioning distinguishes it from XDR offerings tied tightly to a single vendor’s own endpoint or network products, aiming instead to serve as a correlation and detection layer sitting above whatever tools an organization already has deployed.

Founded in 2015 and based in San Jose/Santa Clara, California, Stellar Cyber has built out AI-driven correlation and automated investigation capabilities intended to reduce the alert-triage burden for SOC analysts working across a fragmented multi-vendor security stack, a common reality for mid-market and MSSP customers in particular. At the 2026 Global InfoSec Awards, Stellar Cyber won Most Innovative for AI-Powered Cybersecurity Solutions, continuing a pattern of recognition in prior years for its Open XDR approach.

Stellar Cyber competes in an increasingly crowded XDR/SIEM category against both dedicated XDR vendors and platform incumbents expanding into unified detection, differentiating primarily through its explicit multi-vendor interoperability stance rather than pushing customers toward a single-vendor security stack.