Horizon3.ai Employee Directory
Computer and Network SecurityCalifornia, United States201-500 Employees
Horizon3.ai is a San Francisco–based cybersecurity company focused on offensive security and resilience against AI-powered threats. Its NodeZero platform automates defenses testing at machine speed, identifies exploitable attack paths, verifies fixes, and operates in a continuous loop to demonstrate real resilience. The product was built by a team of U.S. cyber veterans and has been honed through hundreds of thousands of production-safe tests, more than traditional manual pentests. Its customers include government agencies such as the NSA and CISA, as well as Fortune 100 firms and major healthcare providers. Horizon3.ai has received industry recognition, including Fast Company's World's Most Innovative Companies in 2026 and top rankings on the Deloitte Technology Fast 500 (2025) and the Inc. 5000 (2025). In June 2026, the company announced an integration with Brinqa to combine attack-path insights with remediation orchestration capabilities.
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