Horizon3.ai is in the process of raising $100 million in a new funding round and has secured $73 million to date (Singh & Temkin, 2025). The round is being led by New Enterprise Associates (NEA) and follows the company’s previous $40 million Series C raise in 2023. Horizon3.ai has completed over 100,000 autonomous penetration tests using its NodeZero platform (Business Wire, 2025).
The startup reported 101% year-over-year revenue growth and exceeded 150% of Q4 pipeline targets. Its customer base includes 3,000 organizations, and it reports $30 million in annual recurring revenue (Singh & Temkin, 2025; Business Wire, 2025). NodeZero provides a scalable, automated alternative to manual penetration testing.
NodeZero Platform Technical Capabilities
NodeZero supports autonomous penetration testing across cloud, hybrid, and on-prem infrastructure. It performs operational and compliance validation using real attack surfaces without manual oversight (Horizon3.ai, 2025). The platform conducts internal, external, and Kubernetes-specific pentests, combining vulnerability discovery with automated exploitation and fix verification.
Integrated threat detection is delivered through Tripwires, which deploy honeytokens to identify lateral exposure paths. Rapid Response adds alerting for zero- and N-day vulnerabilities, informed by Horizon3.ai’s internal attack research team (Horizon3.ai, 2025). Reporting is consolidated under the Insights dashboard to track exposure trends and remediation progress.
Federal Engagement and Public Sector Credentials
Horizon3.ai holds FedRAMP High Authorization, qualifying it to support federal agencies requiring high-level compliance. The company also participates in the NSA’s CAPT program, offering automated penetration testing to Defense Industrial Base contractors (Business Wire, 2025).
A recent NSA statement described Horizon3.ai’s role in enabling small defense suppliers to identify and fix vulnerabilities. The CAPT program offers accessible testing options for companies handling sensitive government data.
Leadership and Organizational Background
CEO Snehal Antani co-founded Horizon3.ai in 2019 with former U.S. military cyber operators and industry engineers. Antani previously held leadership roles at Splunk and within the Joint Special Operations Command (Singh & Temkin, 2025). The company is based in San Francisco and applies operational expertise in its product development.
Modus Advanced, a defense contractor, reported that its MSP resolved issues within hours of using NodeZero. The company cited the platform’s role in conducting recurring validation across critical infrastructure environments (Business Wire, 2025).
Channel and Partner Growth Strategy
Horizon3.ai reports that 80% of its customers are fully serviced by MSSPs. The company attributes 106% year-over-year growth in partner-sourced pipeline to its channel-first strategy. The Vanguard Partner Program was launched to support further expansion of NodeZero deployments (Horizon3.ai, 2025).
Channel partners facilitate deployments in industries such as healthcare, supply chain, manufacturing, and financial services. Horizon3.ai’s partner model is designed to serve mid-market and enterprise customers without requiring internal red teams.
Ongoing Financial Performance and Funding Context
The $100 million funding round may result in a valuation near $750 million (Singh & Temkin, 2025). NEA’s investment follows a recent cybersecurity funding round for another portfolio company. Horizon3.ai’s earlier investors include Craft Ventures and SignalFire, who participated in the 2023 Series C.
Funding has supported engineering, research and development, and channel growth initiatives. The company plans to continue scaling annual recurring revenue through both direct sales and MSSP partners.
Outlook for Autonomous Security Adoption
Horizon3.ai continues to offer a platform integrating penetration testing, threat detection, and exposure management. Use of NodeZero is expanding through government contracts, MSSP relationships, and commercial partnerships.
The autonomous pentesting category is being adopted by organizations that require repeatable, verifiable, and scalable risk validation. Horizon3.ai’s active funding round and contract pipeline align with increasing demand for operational cybersecurity tools.
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References
Business Wire. (2025, February 25). Horizon3.ai achieves 101% YoY revenue increase and sets new record in Q4 performance. https://www.businesswire.com/news/home/20250225697600/en/Horizon3.ai-Achieves-101-YoY-Revenue-Increase-and-Sets-New-Record-in-Q4-Performance
Horizon3.ai. (2025). NodeZero platform overview and capabilities. Horizon3.ai.
Singh, J., & Temkin, M. (2025, May 28). Security startup Horizon3.ai is raising $100M in new round. TechCrunch. https://techcrunch.com/2025/05/28/security-startup-horizon3-ai-is-raising-100m-in-new-round/
