Horizon3.ai Reviews, Ratings & Features 2026 | Gartner Peer Insights

Gartner defines adversarial exposure validation (AEV) as technologies that deliver consistent, continuous and automated evidence of the feasibility of an attack. These technologies confirm how potential attack techniques would successfully exploit an organization and circumvent prevention and detection security controls. They achieve this by performing attack scenarios and modeling or measuring the outcome to prove the existence and exploitability of exposures. AEV is generally delivered as a SaaS solution with or without on-premises agents. AEV as a market category replaces breach and attack simulation (BAS) and automated penetration testing and red teaming technology from the 2023 Gartner Hype Cycle (Hype Cycle for Security Operations, 2023). AEV technologies provide automated execution of both simplified and/or extensible attack scenarios. Results data from an executed attack scenario is used for various outcomes, such as:
validating a theoretical exposure as real,
automating frequent controls testing,
improving preventive security posture
or improving detection and response capabilities.

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Adversarial Exposure Validation

NodeZero

Horizon3.ai

It Security Administrator

The main reason for my overall experience rating is that having the Horizon3.ai tool that allows for scanning for IOCs with the Rapid Response is an exceptional security feature to deploy in a production environment.  The ability to Find, Fix, and Verify with step-by-step instructions is an excellent plus to the platform.

<50M USD

50M - 250M USD

250M - 500M USD

1B - 3B USD

Gov't/PS/ED <5,000 Employees

500M - 1B USD

3B - 10B USD

10B - 30B USD

Gov't/PS/ED 5,000 - 50,000 Employees

30B + USD

CHIEF INFORMATION OFFICER

Overall experiance has been good.  Might be a little negative due to the partner we are working with.  There are some scheduling issues and results of tests that do not make sense that I think could be handled better. 

Analyst

Competent tool that is a good assistance in the security testing of the company network that uses mainly open source tools with extensive functionality.

Rapid7

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Horizon3.ai is a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, false positives resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Founded in 2019, Horizon3.ai is headquartered in San Francisco, CA.

Horizon3.ai's mission is to help you find and fix attack vectors before attackers can exploit them. NodeZero, our autonomous penetration testing solution, enables organizations to continuously assess the security posture of their enterprise, including external, identity, on-prem, IoT, and cloud attack surfaces. 

Like APTs, ransomware, and other threat actors, our algorithms discover and fingerprint your attack surface, identifying the ways exploitable vulnerabilities, misconfigurations, harvested credentials, and dangerous product defaults can be chained together to facilitate a compromise. 

NodeZero is a true self-service SaaS offering that is safe to run in production and requires no persistent or credentialed agents. You will see your enterprise through the eyes of the attacker, identify your ineffective security controls, and ensure your limited resources are spent fixing problems that can actually be exploited. 

Founded in 2019 by industry, US Special Operations, and US National Security veterans, Horizon3.ai is headquartered in San Francisco, CA, and made in the USA.

Reviews

Ratings Overview

Overall experience with

Favorable Review

Cloud-Based Security Tool Enhances Functionality but Raises Compliance Concerns

Critical Review

Capable Product for Continued Pen Testing at a Reasonable Cost.

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