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Skybox Security Suite vs Tenable Nessus comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 7, 2025

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

Zafran Security
Sponsored
Ranking in Vulnerability Management
17th
Average Rating
9.6
Reviews Sentiment
7.8
Number of Reviews
6
Ranking in other categories
Continuous Threat Exposure Management (CTEM) (1st)
Skybox Security Suite
Ranking in Vulnerability Management
47th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
37
Ranking in other categories
Firewall Security Management (7th)
Tenable Nessus
Ranking in Vulnerability Management
1st
Average Rating
8.4
Reviews Sentiment
6.0
Number of Reviews
87
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2025, in the Vulnerability Management category, the mindshare of Zafran Security is 1.0%, up from 0.1% compared to the previous year. The mindshare of Skybox Security Suite is 0.6%, up from 0.5% compared to the previous year. The mindshare of Tenable Nessus is 7.3%, down from 11.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Market Share Distribution
ProductMarket Share (%)
Tenable Nessus7.3%
Zafran Security1.0%
Skybox Security Suite0.6%
Other91.1%
Vulnerability Management
 

Featured Reviews

Israel Cavazos Landini - PeerSpot reviewer
Weekly insights and risk analysis facilitate informed security decisions
I appreciate the weekly insights Zafran provides, which include critical topics for networks and IT security, allowing us to evaluate which insights apply to our environment. The organization score feature is valuable to keep the leadership team updated on how our infrastructure fares security-wise. The applicable risk level versus base risk level feature is beneficial because prior to Zafran, we only used the base risk level, but now understand that risk depends on the asset itself. Zafran is an excellent tool.
NenadMijatovic - PeerSpot reviewer
Efficient in vulnerability management, stable and easy to use
Vulnerability management is the most valuable feature because it lets you focus on the most critical vulnerabilities. That's the important thing. Here in Serbia, there are not so many companies that have too many firewalls inside one company. So, they usually don't buy this model for Firewall Assurance unless there is some compliance. So you can prove that your firewalls are compliant. So, that model is not so important here in Serbia. It's for bigger companies. So, they usually buy network assurance to build the model of the network and vulnerability management to focus on the most important vulnerabilities. Moreover, Skybox can collect data for many vendors. From the endpoint protection vendors to the network equipment vendors to other security vendors. So, it supports more than one hundred vendors to collect data from them.
MohammedJaffir - PeerSpot reviewer
Has enabled me to reduce false positives and perform deep credential auditing with seamless integrations
I mostly use the configuration audit feature for the audit configuration as a scan policy, and I will use it for credential audit, which helps me scan credentials access such as local administrator or root access, performing a deeper and more accurate check of local configuration settings and file systems, making it a highly recommended feature. Regarding integration capabilities, we can integrate Tenable Nessus with SIM tools such as Splunk, IBM QRadar, and Azure Sentinel, as well as with ticketing systems such as ServiceNow, Jira, and Slack. There is no complexity as it is very easy to integrate everything. In terms of the reporting feature, while vulnerability scanning can throw some false positives, Tenable Nessus has very few, achieving a reduction of 75% to 80% false positives with manual analysis needed. We can generate standard Nessus reports that typically include host summaries and vulnerabilities by host and plugin, alongside solutions and remediation recommendations. The main benefits I get from Tenable Nessus are complete asset inventory and comprehensive attack surface management, allowing us to prioritize vulnerabilities based on risk, focusing on true risk and threat path analysis.

Quotes from Members

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

Pros

"Zafran is an excellent tool."
"Overall, we have seen about eighty-seven percent reduction of the number of vulnerabilities that require urgency to remediate, specifically the number of criticals."
"We saw benefits from Zafran Security almost immediately after deploying it."
"Zafran has become an indispensable tool in our cybersecurity arsenal."
"We are able to see the real risk of a vulnerability on our environment with our security tools."
"I am impressed with the tool's change management, firewall and network assurance."
"The initial setup process was easy."
"The most valuable feature is the compliance, whether it's access compliance or the configuration compliance, to make sure that all of our devices are configured as they're supposed to be, to limit access as much possible, to follow least-access guidelines."
"The revalidation and policy recertifications are most valuable."
"It's given us more visibility in terms of what are the kinds of configurations that are on these devices, and how many of these are stale rules. So it's helped greatly in terms of cleaning up of rules, for sure. And it has definitely given us a more secure way of backing up the configuration on these devices."
"Security review is the most important feature, because it offers a single pane of glass to analyze multiple firewalls."
"This type of tool does a great job of reaching into those other devices producing risk recommendations, compliance recommendations, and a single plane of glass to do your queries, so you can find where these rules might exist."
"The performance could be good because we chose it at the time, but it is too complex for us to appreciate its performance because we lack the necessary skills."
"With the Tenable Nessus enterprise edition, you have unlimited licenses to scan the device."
"Nessus gives me a good preview of vulnerabilities and good suggestions for remediation. It's easy to find a description of a given vulnerability and solutions for it."
"Tenable Nessus has provided increased visibility across the organization's servers."
"The solution is easy to understand for users because instructions are included on the platform."
"The most valuable feature of Tenable Nessus is vulnerability assessments. There are a lot of threats around the world and this solution is the first to come out with detection rules."
"The support has been really cooperative."
"The trial version is very good for testing whether it will suit your needs."
"We have done code scanning for a long period because as a company, we do DevOps as part of our development life cycle."
 

Cons

"The dashboarding and reporting functionality of Zafran Security is an area that definitely could use some improvements."
"I think the ability to have some enhanced reporting capabilities is something they can improve on, as they have good reports but we have asked for some specific reporting enhancements."
"Initially, we were somewhat concerned about the scalability of Zafran due to our large asset count and the substantial amount of information we needed to process."
"The solution needs to move improve its interface to a full web browser version that is more accessible and doesn't require installation for use."
"The initial setup with Skybox Security is hard. You need one or two strong security engineers on your team."
"The dashboard's UI is not interesting; it is quite normal. It would be better if something more attractive or similar useful information found in AlgoSec was available."
"The only place where Skybox has room for improvement, and they're working on releasing this, it's just a slow-go, is the UI. The user interface has historically been via a locally installed thick client. They are moving to a web-based console and it's slowly coming out."
"There is room for improvement in the technical support."
"There are multiple dashboards but no custom dashboard. It would be good to include a custom dashboard so that we can actually choose which field and what kinds of things we want to look at."
"The price could be cheaper."
"The Network Assurance, which helps to create the network model, is not so rich."
"I would like to see an improvement in the ranking of high, medium and low vulnerability."
"It would be better if they had application-level support for mobile devices. They don't have anything to scan mobile devices. Tenable Nessus doesn't have a mobile application vulnerability assessment. I also have issues with the false positive rates. The product has limited features."
"Consumes more system resources when it's running."
"It would be a good idea if they have a simulation of attacks or a use case for finding a new vulnerability or dealing with a zero-day attack."
"The pricing point has increased significantly in recent years. The product's pricing has roughly tripled within the last couple of years, making us reconsider renewing the license for the scanner."
"The accuracy of the vulnerability assessment is not up to par yet, as false alarms and false positives occur often."
"Nessus' reporting could be more user-friendly."
"The reporting feature needs to be improved."
 

Pricing and Cost Advice

Information not available
"I've seen the pricing of every solution on the market. When you compare apples to apples, where Skybox becomes exceedingly expensive is if you look at it compared to something like FireMon that only does a fraction of what Skybox does. But if you include everything that Skybox does, it becomes way more expensive than the competition, but you're also not comparing apples to apples. If you look at FireMon, and you look at like just the firewall assurance piece, they are fairly comparable and, actually, Skybox comes in a little bit cheaper in some cases, depending on which product you're looking at."
"The price is not expensive."
"It's expensive."
"When compared with other companies, the license is more costly."
"Skybox Security Suite has indeed helped us reduce costs. The prices of AlgoSec and Skybox Security Suite are approximately 50 percent different. The tool may require special vendor support from abroad, resulting in slightly higher costs. Its pricing is in the middle."
"The product's pricing is excellent value. In terms of licensing, make sure you understand your network components, all your hops through your network, thoroughly, before you decide on the total cost. If you want to do point-to-point flow analysis and such, you need to have the configuration of all the devices in between point A and point B. A lot of people don't realize all their network components until they start using this product."
"With licensing, the number of network nodes becomes very expensive to the point where you have to rationalize if the tools are warranted anymore."
"I would rate the tool's pricing an eight out of ten."
"Nessus is affordable, but its licensing model could be improved with more flexibility for adding assets."
"The price is reasonable."
"The product pricing is dynamic and varies based on the specific needs of each project and customer."
"We have a subscription, the licensing fees are paid yearly, and I am using the latest version."
"Cost-wise, it's an affordable tool."
"The solution is worth the cost. It's a good investment."
"Tenable Nessus needs to be licensed. We own a license for the security center and that license is charged by the number of IP addresses that you can scan. You're allowed to have as many scanners as you want and there's no license for the number of scanners. We have a bunch of Nessus scanners out there, and as long as we're comfortable with staying under that IP address limit, that's really all we have to be concerned about."
"The solution is expensive."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Computer Software Company
9%
Manufacturing Company
8%
Government
5%
Financial Services Firm
18%
Computer Software Company
12%
Manufacturing Company
10%
Energy/Utilities Company
6%
Computer Software Company
12%
Financial Services Firm
11%
Government
10%
Manufacturing Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business21
Midsize Enterprise4
Large Enterprise20
By reviewers
Company SizeCount
Small Business39
Midsize Enterprise19
Large Enterprise35
 

Questions from the Community

What is your experience regarding pricing and costs for Zafran Security?
Since we stood Zafran Security up in our private cloud, we handle the maintenance on our side. As we opted not to use...
What needs improvement with Zafran Security?
In terms of areas for improvement, Zafran Security is doing a really great job as a new and emerging company. Oftenti...
What is your primary use case for Zafran Security?
My use cases for Zafran Security revolve around two primary areas. One is around vulnerability management and priorit...
What do you like most about Skybox Security Suite?
Overall, the tool has helped us reduce risks. If any step is missing, it's easier for my team or engineers to identif...
What is your experience regarding pricing and costs for Skybox Security Suite?
From a commercial perspective, AlgoSec is more expensive compared to Skybox Security Suite. Skybox Security Suite is ...
What needs improvement with Skybox Security Suite?
The dashboard's UI is not interesting; it is quite normal. It would be better if something more attractive or similar...
How would you choose between Rapid7 InsightVM and Tenable Nessus?
You have full visibility across cloud, network, virtual, and containerized infrastructures with Rapid7 Insight VM. Yo...
What's the difference between Tenable Nessus and Tenable.io Vulnerability Management?
Tenable Nessus is a vulnerability assessment solution that is both easy to deploy and easy to manage. The design of ...
What do you like most about Tenable Nessus?
We have around 500 virtual machines. Therefore, we conduct monthly scans and open tickets for our developers to addre...
 

Overview

 

Sample Customers

Information Not Available
ADP, Blue Cross Blue Shield, BT, USAID, Delta Dental, EDF Energy, EMC, HSBC, Johnson & Johnson
Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University
Find out what your peers are saying about Skybox Security Suite vs. Tenable Nessus and other solutions. Updated: September 2025.
872,706 professionals have used our research since 2012.