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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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Pu W.
PW
Pu W.
04/14/2026
Validated Reviewer
Review source: Seller invite
Incentivized Review

Effortless Network Visibility and Security

|NodeZero from Horizon3.ai
I like that NodeZero from Horizon3.ai is pretty simple to use and straightforward to deploy and maintain. The UI or web GUI is clear and not complicated, which I appreciate. It's quite easy to use, which makes network visibility better and identifying vulnerabilities clear, helping in improving patching. The ease of setting it up is also a plus, as it literally took us just one hour to get it up and running.
CG
Cheryl G.
04/14/2026
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review

Unlimited Pentest Runs Make It Easy to Improve and Re-Test

|NodeZero from Horizon3.ai
I love that there is no limit on how many times you can run a pentest. If you find any issues you can address them and re-run the pentest for a better report.
Brian W.
BW
Brian W.
Director of IT Security
04/07/2026
Validated Reviewer
Review source: Seller invite
Incentivized Review

Revolutionized Our Security with Continuous Pen Testing

|NodeZero from Horizon3.ai
I really appreciate using NodeZero from Horizon3.ai for its capability to run continuous pen testing on our internal and external environments. It does a fantastic job of identifying security vulnerabilities and prioritizing them, enabling us to focus on remediation efforts with minimal effort but maximum impact. I love the ability to validate that fixes are successfully implemented, which helps keep the environment secure. NodeZero effectively improves the security of the entire organization by listing vulnerabilities and increasing their severity based on their role in attack chains. The continuous testing feature is huge for rerunning tests after fixes and consistently staying updated with new features. It's a big improvement compared to traditional pen tests, which are less frequent. The prioritization aspect helps our understaffed security team focus on the most critical vulnerabilities rather than on raw numbers of critical or high vulnerabilities, which aren’t always exploitable. Plus, Horizon3.ai's team was great at helping us set up the initial scans, allowing us to be up and running in less than 24 hours.

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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