Companies › Horizon3
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Horizon3

San Francisco, US · ~150 employees · Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services · Crunchbase rank #221 · horizon3.ai

Horizon3.ai is a cybersecurity company specializing in autonomous penetration testing and vulnerability management. Its flagship platform, NodeZero™, enables organizations to continuously assess their attack surfaces by simulating real-world attack scenarios. NodeZero identifies exploitable vulnerabilities, misconfigurations, and weak credentials across on-premises, cloud, and hybrid environments, providing actionable insights for remediation. The platform operates without the need for persistent or credentialed agents, allowing safe deployment in production environments. It offers features such as NodeZero Kubernetes Pentesting for containerized workloads, NodeZero Tripwires™ for early threat detection, and NodeZero Insights for comprehensive risk analysis. Horizon3.ai collaborates with partners like Tech Mahindra and FedHIVE to extend its services to global enterprises and government agencies, supporting compliance with standards like FedRAMP High.

Also: cybersecurity · penetrationtesting · ai · purpleteams · infosec · machinelearning · datasecurity · autonomouspentesting · attack surface management · red teams · offensive security · pentesting

Funding

1
Every round, secondary, debt facility or acquisition involving Horizon3 that AI Lounge tracks, newest first. Latest: Series E on Aug 5, 2026.
Horizon3 logo
NEA (lead), NightDragon (lead) · Autonomous security testing
$250M
val. $2B

Timeline · 2

Aug 5, 2026
Round
Series E · $250M at $2B · NEA, NightDragon

In the news

1
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