Horizon3.ai

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Read 29 Horizon3.ai reviews and testimonials from customers, explore 22 case studies and customer success stories, and watch 10 customer videos to see why companies chose Horizon3.ai as their Breach and Attack Simulation

The NodeZero™ platform empowers organizations to continuously find, fix, and verify exploitable attack surfaces. It is the flagship product of Horizon3.ai, founded in 2019 by former industry and U.S. National Security veterans. Our mission is to help organizations see their networks through the eyes of the attacker and proactively fix problems that truly matter, improve the effectiveness of their security initiatives, and ensure that they are prepared to respond to real cyberattacks.

Reduce your security risk by autonomously finding weaknesses in your network, knowing how to prioritize and fix them, and immediately verifying that your fixes work. NodeZero delivers production-safe autonomous pentests and other key assessment operations that scale across your largest internal, external, cloud, and hybrid cloud environments. No required agents, no code to write, and no consultants to hire.

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Customer Rating Review Scorebased on 540 reference ratings
4.8/5.0 (540)
  • Top Rated Software 2025 2025
    2025Top Rated Software Award
  • 2024
    Winter 2024Rising StarBreach & Attack Simulation Software

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Featured Testimonials

  • “This structure gives them flexibility but also introduces challenges for maintaining consistency and resilience.”

  • "For me, the biggest benefit is the attack path identification and actual prioritization of the vulnerabilites. Other tools simply pull the CVE value, and we get hundreds of criticals and highs."

  • “DRI is a soft money funded organization, so we are always budget focused, and what drew us to [Horizon3.ai] was the ability to get a full featured, easy to use pentest program at a price we can afford. The fact that NodeZero is autonomous makes things significantly easier. We don’t have to pay a red team to do an expensive, in-person comb-through of our security controls.”

Featured Case Studies

  • Revolutionizing Cybersecurity: F12.net’s Journey with Autonomous Penetration Testing

  • Medical Clinic - Customer Case Study

  • Healthcare Staffing Organization Puts Cybersecurity Best Practices in Place with NodeZero

Featured Customer Videos

Additional Horizon3.ai Information & Resources

Read Horizon3.ai Reviews, Testimonials & Customer References from 29 real Horizon3.ai customers.

Browse Horizon3.ai Case Studies, Customer Success Stories, & Customer References from 22 businesses that use Horizon3.ai.

Watch Horizon3.ai Customer Videos to learn why 10 businesses chose Horizon3.ai.