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Nucleus Security vs Tenable Security Center comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Feb 23, 2026

Review summaries and opinions

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

Categories and Ranking

Qualys TotalCloud
Sponsored
Ranking in Vulnerability Management
11th
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
39
Ranking in other categories
Container Security (11th), Cloud Workload Protection Platforms (CWPP) (7th), Cloud Security Posture Management (CSPM) (8th), SaaS Security Posture Management (SSPM) (1st), Cloud-Native Application Protection Platforms (CNAPP) (6th)
Nucleus Security
Ranking in Vulnerability Management
40th
Average Rating
8.0
Reviews Sentiment
7.3
Number of Reviews
2
Ranking in other categories
Application Security Tools (28th), Risk-Based Vulnerability Management (14th), Continuous Threat Exposure Management (CTEM) (13th)
Tenable Security Center
Ranking in Vulnerability Management
8th
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
56
Ranking in other categories
Cloud Security Posture Management (CSPM) (12th), Risk-Based Vulnerability Management (3rd)
 

Featured Reviews

RO
IT Security Expert at Alior Bank S.A.
Unified risk scoring has improved our cloud visibility and simplifies remediation priorities
Qualys TotalCloud provides unified vulnerability and threat assessment across both IAS and SaaS. This solution provides a single prioritized view of risk, which helps reduce the work I would have to do. We are no longer based on CVSS; we are based on Qualys risk scoring, which is based on CVSS plus internal findings made by Qualys, and then assigns its own score. The TruRisk insight feature has found a small number of assets with high vulnerability scores, though I am cautious since some information is classified. Qualys TotalCloud has positively impacted our bank's performance, and we have definitely seen benefits after implementing this solution.
VK
manager at a computer software company with 201-500 employees
Unified vulnerability workflows have transformed how our teams prioritize and resolve critical risks
While the platform is incredibly powerful, the initial configuration curve of Nucleus Security can be a bit steep. When first setting up complex, multi-layered automation rules and asset groupings, the interface can feel a little overwhelming. Having more intuitive step-by-step visualized wizards or guided templates for building complex triage workflows would make the onboarding process much smoother for new team members. Dashboard customization and reporting would definitely be on my wish list. While the default dashboards are great for a general overview, it can take a bit of manual tweaking when building highly tailored workspace views for different engineering groups. Having a more flexible drag-and-drop widget system where individual teams can prioritize exactly what metrics they see first on their layout would be a huge quality of life update. On the reporting side, the data it generates is solid, but I would like to see more granular control over formatting within the platform itself. Sometimes leadership wants data tailored in very specific ways, and currently, we occasionally have to export the data and clean it up externally to meet those exact visual preferences.
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.

Quotes from Members

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

Pros

"With TotalCloud, we can scan through the API. If we are not able to deploy cloud agents on the machine, we can use the API."
"I appreciate Qualys TotalCloud's ability to onboard any type of device with ease, including containers."
"The most valuable feature is extensibility."
"The scalability is good as well. I would rate it ten out of ten."
"Generally, Qualys is very good at detections, whether on cloud or on-prem, and the agent allows deployment on both infrastructures, providing continuous monitoring of your assets, which is a key selling point for us."
"The platform's unified view of the organization proves particularly valuable for leadership team meetings."
"Qualys TotalCloud has positively impacted our bank's performance, and we have definitely seen benefits after implementing this solution."
"I would rate Qualys TotalCloud ten out of ten."
"Nucleus Security has fundamentally changed how we manage our vulnerability lifecycle and made our entire incident response process much more proactive, organized, and reliable."
"The best features that Nucleus Security offers in my experience are the unified integrations with all of the different vulnerability management platforms."
"Having Tenable is a requirement; it is money well-spent in that it focuses us to work on problems that are prioritized and it allows us to cut down on the manual integration of multiple reports from Microsoft and Linux, etc., so that running with a much smaller team of two people probably saves 80 percent of manpower."
"Compliance and vulnerability scans are most valuable; compliance scan helps in validating how our teams are complying, and vulnerability scan helps in future-proofing, and its vulnerability detection is accurate."
"The initial setup process is simple."
"The tool gives us fewer false positives. Compared to its competitors, the solution’s reports are more accurate."
"The most valuable features of Tenable SC are the reports and the dashboards."
"One of the most valuable features is their distributed scan model for allotting engines to work together as a pool and handle multiple scans at once, across multiple environments. Automatic scanning distribution is a distinguishing feature of their toolset."
"The most valuable features of the solution are the dashboards and speed of the test, and Tenable.sc is user-friendly."
"It is a much better solution than other competitors and provides almost everything that is required in terms of vulnerability management."
 

Cons

"In my opinion, what can be improved in Qualys TotalCloud includes pricing and container scanning."
"To improve the user experience, reporting could be simplified for better comprehension by end users and project managers, facilitating issue resolution."
"In a future release, I suggest that zero-day vulnerabilities should be predicted in advance using AI technologies. The system is not 100% secure yet, so proactive threat hunting could be enhanced to be more proactive than the current system."
"The main area needing improvement is integration. Although the team is strengthening TotalCloud, integration can be enhanced with SIEM, SOAR, ITSM, and other sources."
"There should be improvement from a dashboard perspective when collecting and showcasing data to lead management."
"The patching process with Qualys Patch Management, which is part of TotalCloud, does not cover installing certain prerequisites on the servers or workstations. This shortcoming means we must rely on SCCM when any service stack updates or additional prerequisites are needed."
"There is room for improvement in the support."
"There is room for improvement in vulnerability scanning, particularly for PaaS environments. Currently, Qualys does not have full access to these instances, which limits its effectiveness."
"While the platform is incredibly powerful, the initial configuration curve of Nucleus Security can be a bit steep."
"Nucleus Security needs a better view into exposure management, as exposure management and attack path management are missing."
"The product should provide risk-based vulnerability management."
"It's good at creating information, it's good creating dashboards, it's good at creating reports, but if you want to take that reporting metadata and put it into another tool, that is a little bit lacking."
"They are not currently handling call flows properly. Some call flows are being deleted from the registry but still show as active."
"In terms of the configuration of the reports, there's some level of flexibility that we are not able to achieve."
"As it is now, integration with new tools has to be developed specifically, so it's not easy."
"If I want to have a very low-managed scan policy, it's a lot of work to create something which is very basic. If I use a tool like Nmap, all I have to do is download it, install it, type in the command, and it's good to go. In Security Center, I have to go through a lot of work to create a policy that's very basic."
"I will say it's a lot slower compared to an MS scan. It takes so much longer, so the performance could definitely be worked on."
"I'm having some issues with that and it's holding things up."
 

Pricing and Cost Advice

"Qualys TotalCloud offers good pricing that is affordable and competitive with the market. Our partnership also provides us with additional benefits."
"Qualys TotalCloud is expensive."
"Qualys TotalCloud is cost-efficient and was selected for its value compared to other products."
"It isn't cheap, but it's reasonable. It helps us to manage things with very few resources."
"The pricing for TotalCloud is attractive and competitive in the market. Given the features, especially the dashboard, I have no concerns regarding pricing."
"The pricing is comparable. It is built into our other product, so I cannot piecemeal it. It is a part of our subscription."
"Qualys TotalCloud is expensive, but it offers a premier solution with no headaches."
"As a middle management member, I do not have direct pricing knowledge, but based on the knowledge from our meetings, its pricing is competitive."
Information not available
"Though reasonable, the main competitor of Tenable SC, Rapid7, offers a more aggressive and better priced product."
"The tool provides competitive pricing."
"The pricing depends upon the number of IPs."
"It is slightly more expensive than other solutions in the same sphere."
"I would rate the pricing a nine out of ten, where ten is expensive. It is the most expensive tool my company is using."
"This solution's price is quite high."
"Compared to other companies or other products it could maybe be a little bit less, but the price is okay. I would say it's not very expensive."
"We're able to save because we don't have to employ more staff members to help wit ht he scheduling of the scans, running the reports or sending them out to the systems owners. That alone is a big ROI for us."
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Top Industries

By visitors reading reviews
Manufacturing Company
16%
Financial Services Firm
13%
Construction Company
8%
Comms Service Provider
7%
Computer Software Company
13%
Financial Services Firm
13%
Construction Company
8%
Manufacturing Company
7%
Financial Services Firm
12%
Manufacturing Company
11%
Government
8%
Healthcare Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise5
Large Enterprise29
No data available
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise12
Large Enterprise27
 

Questions from the Community

What needs improvement with Qualys TotalCloud?
Areas that need improvement in every solution include the remediation part. The remediation steps should be simple en...
What is your primary use case for Qualys TotalCloud?
Our use case involves the assets that we have under cloud, the assets exposed to the internet, and the internal appli...
What is your experience regarding pricing and costs for Nucleus Security?
I have a good experience with that, so we don't have much problem dealing with pricing, setup, and licensing.
What needs improvement with Nucleus Security?
Nucleus Security needs a better view into exposure management, as exposure management and attack path management are ...
What is your primary use case for Nucleus Security?
My main use case for Nucleus Security is unifying the vulnerability management landscape, providing a single source o...
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 ...
What is your primary use case for Tenable SC?
The typical use case for Tenable Security Center is that it is an on-premise solution, and it can use the agent and a...
 

Also Known As

Qualys TotalCloud with FlexScan
No data available
Tenable.sc, Tenable Unified Security, Tenable SecurityCenter
 

Overview

 

Sample Customers

Information Not Available
Information Not Available
IBM, Sempra Energy, Microsoft, Apple, Adidas, Union Pacific
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