Horizon3.ai, founded in 2019, operates in the cybersecurity sector with a focus on autonomous penetration testing and security posture validation. The company's core offering is NodeZero™, a platform that enables organizations to identify and remediate exploitable attack vectors before they can be leveraged by adversaries. NodeZero™ conducts continuous, production-safe assessments across internal, external, cloud, and hybrid environments.
The company's team includes former U.S. Special Operations cyber operators, startup engineers, and cybersecurity practitioners. Its stated mission addresses common industry challenges such as ineffective security tools, false positives, alert fatigue, and the cybersecurity skills shortage. Horizon3.ai has a presence in North America, serving clients across education, enterprise, and government verticals.
The company was recognized as the 3rd fastest-growing company in North America on the 2025 Deloitte Fast 500 ranking.
