Horizon3.ai Raises $73M+ in Funding, Eyes $100M Round

Horizon3.ai Secures Significant Funding for Autonomous Penetration Testing

Cybersecurity startup Horizon3.ai has raised at least $73 million in a new funding round, aiming for a total of $100 million. The round is led by NEA, with the company's valuation estimated at upwards of $750 million.

NEA Leads Latest Investment in Cybersecurity Startup

This marks NEA's second major cybersecurity investment in recent weeks, following Veza's $108 million round in April. One source indicates Horizon3.ai may have already secured the full $100 million, with annual recurring revenue estimated at $30 million. Neither Horizon3.ai nor NEA have commented on the funding.

Rapid Growth and Expansion for Horizon3.ai

In August 2023, Horizon3.ai raised $40 million in a Series C round led by Craft Ventures. This latest funding follows significant growth for the company, which reported 101% year-over-year revenue growth in February 2025. The company also recently achieved FedRAMP authorization, allowing it to serve federal agencies.

Autonomous Security Solutions to Combat Rising Threats

Founded in 2019 by former U.S. Special Operations cyber operators and cybersecurity experts, Horizon3.ai provides autonomous threat detection tools. These tools are designed to protect against the increasing prevalence of AI-powered automated attacks. CEO Snehal Antani, former CTO of Splunk, leads the San Francisco-based company.

With this new funding, Horizon3.ai is poised to further develop its autonomous penetration testing platform and expand its market reach.