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Tenable Security Center vs The NodeZero Platform by Horizon3.ai comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 8, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
6.5
Tenable Security Center boosts ROI by minimizing costs, enhancing security, reducing manpower needs, and preventing costly data breaches.
Sentiment score
3.0
NodeZero Platform boosts efficiency, reduces costs, and improves scalability but shows variable returns on investment for users.
If we cannot adjust how to operate the solution, then it becomes very difficult, so hearing and initial tuning are very important.
Marketing Expert at J's communication
Through the use of Tenable Security Center, my clients achieve more efficient patching and gain visibility and understanding of security operations, leading to improved resilience and infrastructure insight.
Solution engineer at EXPERTience
A reduction in remediation time has been seen because it is finding things before they happen.
Director of Enterprise Security at a energy/utilities company with 51-200 employees
Being able to find them because there have been no eyes on that particular section so far ever, and fixing those potentially prevented those companies from getting breached.
IT Security Consultant at Systemhaus for you GmbH
So far, I have seen a return on investment with The NodeZero Platform by Horizon3.ai, as we managed to save a lot of time and effort with this because this is an autonomous tool, and our manual effort is significantly reduced because of a product of this type.
Senior Manager | Manager Security Services at RISK ASSOCIATES
 

Customer Service

Sentiment score
7.4
Tenable Security Center customer support is responsive and knowledgeable, with U.S. support rated higher than the European counterpart.
Sentiment score
6.6
The NodeZero Platform by Horizon3.ai excels in customer service with swift, effective support, earning high satisfaction ratings.
Longer response times and less thorough assistance.
Solution engineer at EXPERTience
They are helpful and were very helpful to us, coordinating with us on several issues.
Head of Information Security at a consultancy with 1,001-5,000 employees
Overall, when it comes to The NodeZero Platform's tech support, you can reach them via a chat message on their website, and they respond almost immediately.
Director of IT Security at a manufacturing company with 1,001-5,000 employees
Previously, with time-sensitive engagements, I would worry about resolving issues before deadlines. That concern has diminished as they've become more responsive and require less escalation to engineering.
Principal Consultant at JTI Cybersecurity
The vast majority of times they are able to resolve the exact questions my team has on the first attempt, which is really good for customer or technical support.
Chief Information Officer at a construction company with 1,001-5,000 employees
 

Scalability Issues

Sentiment score
8.0
Tenable Security Center is praised for its seamless scalability, adaptability, and integration, accommodating diverse organizational needs and sizes effectively.
Sentiment score
7.3
NodeZero Platform efficiently manages large-scale networks, ensuring seamless deployment and performance even with extensive assets and IP addresses.
I can scale it extensively with the use of agents, allowing scanning in restrictive environments and loosely connected devices.
Solution engineer at EXPERTience
Scalability is a bit limited with Tenable Security Center.
Cyber Security Consultant at a tech services company with 1-10 employees
We have conducted pen tests in environments with hundreds of thousands of IP addresses without any scalability issues.
CEO at cybovate
We currently scan approximately 1,500-2,000 assets and haven't encountered any scaling or throughput issues.
Information Security Manager at a non-profit with 51-200 employees
Anywhere you can put a VM, you can run another concurrent scan.
Director of IT Security at a manufacturing company with 1,001-5,000 employees
 

Stability Issues

Sentiment score
8.0
Tenable Security Center is highly stable and reliable, handling large tasks efficiently with users rating its stability highly.
Sentiment score
8.0
NodeZero Platform offers stable performance without crashes, with occasional long scans due to credential identification, resolved by memory adjustments.
The stability of the solution is outstanding.
Solution engineer at EXPERTience
We have not encountered any issues on the platform regarding accessibility, performance, or stability.
CEO at cybovate
Regarding stability, it has never crashed, and there has not been any lagging from deployment or running.
Director of Enterprise Security at a energy/utilities company with 51-200 employees
I would rate the stability of The NodeZero Platform by Horizon3.ai as a ten.
Senior Manager | Manager Security Services at RISK ASSOCIATES
 

Room For Improvement

Users desire improved reporting, third-party integration, interface design, vulnerability handling, web scanning, pricing, support, and user-friendly features.
Improvements in notifications, reporting, integration, and training are needed alongside enhanced testing capabilities and cost efficiency concerns.
It's important for Tenable to catch up on testing capabilities that are present in solutions like Qualys.
Cyber Security Consultant at a tech services company with 1-10 employees
The reports and plugins for reports and scans could benefit from enhancements.
IT Helpdesk at a manufacturing company with 51-200 employees
Translating reports into European languages is especially relevant in Central Eastern Europe, where clients often require reports in local languages.
Solution engineer at EXPERTience
This service reveals which credentials and email addresses are available on the deep web, as well as which domains have been set up using typo-squatting techniques.
Information Security Manager at a non-profit with 51-200 employees
The one thing that is very much asked from us as a service provider is DAST testing, so when a company is building a software, they could see their current security status while they are building the application.
Offensive Security Analyst at a tech services company with 201-500 employees
One of the areas where improvement is needed is in the visibility and reporting for large enterprises.
CEO at cybovate
 

Setup Cost

Tenable Security Center is costly per asset, with options including subscription and perpetual licenses, generally pricier than competitors.
Enterprise users value NodeZero Platform's cost-efficient pricing and flexibility, finding it cheaper and more extensive than manual pentests.
The product is somewhat pricey, reflecting its valuable features and status as a high-quality solution in the vulnerability management market.
IT Helpdesk at a manufacturing company with 51-200 employees
Tenable Security Center is quite expensive, particularly for the CEE region, causing us to lose cases due to its pricing.
Solution engineer at EXPERTience
The price of Tenable Security Center is not so high; it's relatively a cheaper solution.
Marketing Expert at J's communication
The pricing is much more affordable than traditional penetration tests.
Manager, Information Technology at a performing arts with 11-50 employees
It's a bit cheaper than manual penetration testing because manual testing typically allows you to scan only a few subnets.
Works at a hospitality company with 201-500 employees
While cheaper than XM Cyber and human pen testers, it's more expensive than vulnerability managers.
CEO at cybovate
 

Valuable Features

Tenable Security Center offers comprehensive vulnerability management with intuitive tools, strong integration, and flexible compliance for effective threat detection.
NodeZero Platform by Horizon3.ai automates penetration testing, enhances cybersecurity, and saves time with precise remediation, scalability, and ease of use.
We obtained good reports showing when patches were closed and the details of each patch, including who executed it and everything related to the patching process until it was closed.
Head of Information Security at a consultancy with 1,001-5,000 employees
Tenable Security Center provides an overall score of vulnerabilities, comparing an organization with others in the same industry.
IT Helpdesk at a manufacturing company with 51-200 employees
The most effective feature of Tenable Security Center for detecting vulnerabilities is its capability for critical mapping.
Cyber Security Consultant at a tech services company with 1-10 employees
When a new vulnerability, such as a zero-day exploit, is identified, they review your previous scans to determine if you might be vulnerable to it, and they proactively notify you.
Director of IT Security at a manufacturing company with 1,001-5,000 employees
The detailed reports not only list the vulnerabilities that matter, but they also include direct links to patches.
Information Security Manager at a non-profit with 51-200 employees
The NodeZero Platform's real attack capabilities help in identifying vulnerabilities on our on-prem systems because it provides actual vulnerabilities by attacking our systems.
Chief Information Security Officer at a construction company with 1,001-5,000 employees
 

Categories and Ranking

Tenable Security Center
Ranking in Vulnerability Management
6th
Ranking in Risk-Based Vulnerability Management
3rd
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
56
Ranking in other categories
Cloud Security Posture Management (CSPM) (14th)
The NodeZero Platform by Ho...
Ranking in Vulnerability Management
8th
Ranking in Risk-Based Vulnerability Management
5th
Average Rating
9.0
Reviews Sentiment
5.9
Number of Reviews
16
Ranking in other categories
Advanced Threat Protection (ATP) (11th), Penetration Testing Services (1st), Breach and Attack Simulation (BAS) (1st)
 

Mindshare comparison

As of March 2026, in the Vulnerability Management category, the mindshare of Tenable Security Center is 3.1%, down from 6.0% compared to the previous year. The mindshare of The NodeZero Platform by Horizon3.ai is 1.5%, up from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Tenable Security Center3.1%
The NodeZero Platform by Horizon3.ai1.5%
Other95.4%
Vulnerability Management
 

Featured Reviews

reviewer1534134 - PeerSpot reviewer
Head of Information Security at a consultancy with 1,001-5,000 employees
Centralized analytics have strengthened patch visibility and support efficient regulatory reporting
From my experience, I assess the product's analytics capabilities as successful. It helped us significantly with patching and managing the risk of the patching process across all our environments, including network devices with Windows and Unix systems. The product covered several environments and gave us exactly what we needed in our environment. Tenable Security Center's centralized platform helped with risk assessment and management across our IT environments. It covered the patching process, and we previously faced many issues regarding how to patch different environments, how to monitor the patching process, and whether it was successful or not. We obtained good reports showing when patches were closed and the details of each patch, including who executed it and everything related to the patching process until it was closed. This gave us good details about the process which helped us significantly in our reporting and even in audits, whether internal or external. We learned how to close audit issues safely and successfully. We used the dashboards for real-time threat insights and extracted several dashboards from Tenable Security Center. We use these dashboards in our cybersecurity dashboard and committees that we have. These dashboards are part of our committees, especially the cybersecurity committee and other committees that we attend.
Hussain Z - PeerSpot reviewer
Senior Manager | Manager Security Services at RISK ASSOCIATES
Automated testing has transformed how we deliver fast, consistent security assessments
The key capabilities of the NodeZero platform by Horizon3.ai that I have found most valuable are its speed, scalability, and consistency. It is able to cover a broad scope in a relatively short period of time, which delivers significant efficiency gains when compared with traditional manual testing. It also provides a more consistent outcome, as the process is not influenced by human bias or variability. One of the most valuable features is the ability for security teams to remediate and retest vulnerabilities immediately. The one-click verification capability is particularly effective, as it allows fixes to be validated quickly without the need to rerun the entire assessment. This streamlines the remediation cycle and supports faster confirmation of security improvements. The platform’s real attack capabilities have also helped reduce false positives in the identification of vulnerabilities across our on-premises systems. Because the findings are evidence-based and validated prior to reporting, the results are more reliable and actionable. This enables us to focus our efforts on confirmed security issues that genuinely require attention, rather than spending time investigating theoretical or unverified exposures. The NodeZero platform also strengthens my understanding of potential security threats through its continuously updated capabilities. With new vulnerabilities emerging and being exploited in the wild on a regular basis, it is valuable to have a platform backed by a strong research and development function that continuously updates attack content to reflect the current threat landscape. This makes the platform effective not only as a point-in-time validation tool, but as part of an ongoing and continuous security assurance programme.
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Manufacturing Company
10%
Government
9%
Computer Software Company
8%
Comms Service Provider
10%
Manufacturing Company
8%
Computer Software Company
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise10
Large Enterprise27
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise2
Large Enterprise6
 

Questions from the Community

What do you like most about Tenable SC?
The tool's dashboard and reporting capabilities match our company's needs since we are able to modify the basic view to create a new dashboard, and it works out very well for our needs.
What is your experience regarding pricing and costs for Tenable SC?
The price of Tenable Security Center is not so high; it's relatively a cheaper solution.
What needs improvement with Tenable SC?
We did conduct a long implementation which relates to what I think can be improved about Tenable Security Center. In some cases, we needed to refer back to Tenable itself, and in other cases, we ne...
What needs improvement with Horizon3.ai?
Improvements with The NodeZero Platform by Horizon3.ai are already underway; many people mention infrastructure testing is well-handled, but they seek better web application testing, which is curre...
What is your primary use case for Horizon3.ai?
My main use case for The NodeZero Platform by Horizon3.ai is to demo the platform to our channel partners and any end-user customers that they bring us, and also for my own benefit, as we look at o...
What advice do you have for others considering Horizon3.ai?
The way you find a vulnerability with The NodeZero Platform by Horizon3.ai, you can also fix and then verify if that vulnerability has been solved, which is the selling point itself, emphasizing ex...
 

Also Known As

Tenable.sc, Tenable Unified Security, Tenable SecurityCenter
Horizon3.ai
 

Overview

 

Sample Customers

IBM, Sempra Energy, Microsoft, Apple, Adidas, Union Pacific
Government agencies, Defense Industrial Base organizations, and enterprises in regulated industries such as finance, healthcare, manufacturing, and criticalinfrastructure rely on NodeZero to meet rigorous security and compliance requirements with continuous, scheduled, and on-demand testing.
Find out what your peers are saying about Tenable Security Center vs. The NodeZero Platform by Horizon3.ai and other solutions. Updated: March 2026.
884,873 professionals have used our research since 2012.