Horizon3.ai, the leading provider of offensive security solutions, today announced record first-half 2025 results. The company delivered 137% year-over-year ARR growth, underscoring accelerating demand for NodeZero as enterprises move toward continuous security validation.

Growth was strongest in the enterprise segment, which expanded 485% year-over-year as Horizon3.ai secured deployments with Fortune 250 companies, global healthcare providers, major financial institutions, and critical infrastructure operators.

Overall adoption continues to scale rapidly, with nearly 4,000 companies worldwide now using NodeZero, a 117% increase year-over-year. To date, Horizon3.ai has executed more than 170,000 autonomous pentests, including the largest pentest ever recorded—safely testing more than 100,000 IP addresses in a single run for a large municipal transportation authority. This milestone underscores NodeZero’s ability to meet the needs of the largest and most complex enterprise environments.

Customer Momentum

Horizon3.ai is gaining traction across some of the world’s most demanding environments. Its customers now include three Fortune Top 10 companies, leading hospital groups in both the U.S. and EMEA, two of the nation’s largest school systems, and Fortune 500 enterprises spanning financial services, pharmaceuticals, automotive, manufacturing, and technology. The company also works with a global leader in nuclear fuel enrichment, highlighting its role in protecting critical infrastructure and national defense.

Horizon3.ai’s global footprint continues to grow through partnerships with NCC Group, Tech Mahindra, and Kyndryl, enabling organizations worldwide to continuously validate their security posture. The company is also advancing resilience across the federal government and Defense Industrial Base, supporting critical supply chains and civilian agencies. Organizations in these high-stakes sectors choose NodeZero because it delivers the scale, safety, and accountability required by large enterprises.

Industry Recognition

Horizon3.ai made its debut on the 2025 Inc. 5000 list, ranking #121 overall and earning the #1 spot in Security, driven by 2,962% three-year growth.

In addition, Horizon3.ai received multiple awards in 2025, including:

• Best SaaS Product for Cybersecurity
• AI in Cybersecurity Innovation Award
• The Channel Co. MES Computing 2025 Award
• Rising in Cyber Award
• Multiple Global InfoSec Awards
• Recognition on the Fortune Cyber 60 list for the second consecutive year

“Risk boils down to three questions: Are you exploitable? What would the business impact be if you are? And are attackers actively using those tactics? Enterprises need clear answers to prioritize action. NodeZero delivers that proof, enabling organizations to focus on what matters most and continuously validate their security posture,” said Snehal Antani, CEO and Co-Founder of Horizon3.ai.

For more information, visit www.horizon3.ai.

About Horizon3.ai

Horizon3.ai empowers organizations to continuously verify their security posture with NodeZero®, the industry’s leading autonomous pentesting platform. Built to think and act like an attacker — but operate safely in production — NodeZero identifies exploitable weaknesses, prioritizes fixes based on real-world impact, and verifies remediation at scale. Customers across manufacturing, healthcare, finance, and national security rely on NodeZero to reduce risk and accelerate security outcomes.

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