Horizon3, the AI-Native Proactive Security Company behind NodeZero, today announced that it has surpassed $100 million in annual recurring revenue underpinned by 95% gross dollar retention and 125% net dollar retention. This milestone comes approximately five years after crossing $1 million ARR in September 2021, and reflects sustained growth as organizations adopt continuous, production-safe, autonomous penetration testing.
The company began by solving one of the hardest problems in the domain: autonomous pentesting of internal production systems. Accomplishing this provided access to high-value cyber training data residing behind the firewall. From there, Horizon3 expanded attack surface testing to external, cloud, Kubernetes, and web applications, all conducted safely in production.
In parallel, it expanded into adjacent budgets affected by comprehensive pentesting, including auto-deploying deception based on identified attack paths, driving CTEM workflows, and now, agentic remediation workflows via blue-team agents. Deception is a resurging category given its effectiveness against agentic attackers.
Horizon3's self-service experience and predictable subscription licensing model has enabled approximately 80% of customers to shift from annual to monthly pentesting, with 40% shifting to weekly. This frequency accelerates transition to continuous exposure management practices, enabling customers to prove cyber resilience over time.
The exploit window is collapsing as frontier models turn newly disclosed weaknesses into working attack paths faster than traditional testing cycles can respond. Horizon3 is investing in three areas to remain ahead.
First, expanding sovereign cyber AI regions so organizations where data residency is required can run same high-frequency, in-scope testing. Second, building cyber resilience centers of excellence across critical infrastructure so closed-loop hack, fix, verify, repeat model operates at scale and auditability those environments require. Third, advancing attack-defend AI learning loops so every production test improves next one, turning volume of real-world attack paths already generated across hundreds of thousands of tests into durable advantage.
Horizon3's NodeZero platform has been used to conduct more than 350,000 production-safe tests across more than 7,000 organizations globally, including Fortune 10 enterprises, multinational banks, major healthcare networks, and government agencies. The company is FedRAMP High authorized and helps customers meet a range of regulatory requirements.
About Horizon3
Horizon3, the AI-Native Proactive Security Company behind NodeZero, shifts the advantage from attackers to defenders by giving organizations the power to fight AI with AI. NodeZero, the World's Best AI Hacker, autonomously tests defenses at machine speed, safely uncovers and prioritizes exploitable attack paths, instantly verifies fixes, and drives a continuous hack, fix, verify loop. More than 7,000 organizations, including global defense agencies, Fortune 10 enterprises, multinational banks, and major healthcare providers, trust Horizon3 for security they can prove. Horizon3 was recently named the Fastest Growing Cybersecurity Company in North America by the Deloitte Technology Fast 500 and named one of the Most Innovative companies by Fast Company in 2026.
