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Horizon3.ai

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4.7 out of 5 stars
35 reviews
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Average star rating
4.7
Serving customers since
2019

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Horizon3.ai Reviews

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james.kavanagh@cybervigilance.uk K.
JK
james.kavanagh@cybervigilance.uk K.
Founder & CTO at Cyber Vigilance
07/17/2026
Validated Reviewer
Verified Current User
Review source: G2 invite on behalf of seller
Incentivized Review

Showing you what's actually exploitable!

|NodeZero from Horizon3.ai
The platform capabilities are outstanding. I really like that it's safe to use in production and will prioritise any exploits or weaknesses in your environment. The UI is easy to navigate and provides some in-depth information at every step of a successful attack path. It's fast and can scale to any size; it offers various integrations with certain ticketing systems. Pricing seems very reasonable for what you get, and what it gives back to you is very valuable. The support has been second to none, and any issues or queries I've made have been resolved in a timely manner. It doesn't use a lot of AI, which I like, and where it does use it, it's enriching already useful information.
Verified User in Information Technology and Services
AI
Verified User in Information Technology and Services
07/17/2026
Validated Reviewer
Verified Current User
Review source: G2 invite on behalf of seller
Incentivized Review

NodeZero Takes the Guesswork Out of Pen Testing With Continuous Attack-Path Validation

|NodeZero from Horizon3.ai
What I like most about NodeZero is that it removes the guesswork from penetration testing. Rather than depending on a point-in-time, manual assessment, it continuously and autonomously identifies exploitable attack paths the way a real attacker would—chaining together weak credentials, misconfigurations, and vulnerabilities to highlight real business risk, not just a long list of CVEs. The findings are prioritized and actionable, which helps our team focus remediation on what truly matters instead of chasing noise. It’s also refreshingly self-service: there are no lengthy scoping calls or waiting around for a vendor’s schedule, and we can launch an operation whenever we need to. That mix of speed, autonomy, and real-world attack validation has made it a genuinely valuable addition to our security program.
JO
Jehad O.
07/12/2026
Validated Reviewer
Review source: Seller invite
Incentivized Review

Excellent platform for running production safe red team attack simulations

|NodeZero from Horizon3.ai
The autonomous penetration testing architecture safely performs production line exploits without impact and downtime. It leverages accessed Active Directory credentials and local configuration vulnerabilities to create the path of lateral movement.It stitches together compromised Active Directory credentials and local configuration vulnerabilities to produce paths of lateral movement.

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HQ Location:
San Francisco, US

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@Horizon3ai

What is Horizon3.ai?

Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up? And, how do we withstand the onslaught of AI-powered attacks? Horizon3.ai’s NodeZero® shifts the advantage from attackers to defenders by giving organizations the power to fight AI with AI. The Proactive Security Platform autonomously tests your defenses at machine speed, safely finds and prioritizes exploitable attack paths, instantly verifies fixes, and drives a continuous loop so you can prove you’re resilient, not just hope you are. NodeZero, the World’s Best AI Hacker™, was built by an elite team of U.S. cyber veterans and has honed its skills over 225K production-safe tests, more than all manual pentests in history. More than 5,000 organizations including the NSA, CISA, Fortune 100 giants, and major healthcare providers trust Horizon3.ai to prioritize what matters and prove they’re ready for what’s next. Horizon3.ai has been recognized by Fast Company as one of the World’s Most Innovative Companies in 2026. The company ranked #3 overall on the 2025 Deloitte Technology Fast 500 and was named the #1 cybersecurity company on the Inc. 5000 in 2025. It has also been named to the Fortune Cyber 60 in both 2023 and 2025 and is a two-time Black Unicorn Award winner.

Details

Year Founded
2019
Website
www.horizon3.ai