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Skybox Security Suite vs Tenable Nessus comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 1, 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
16th
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
30th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
37
Ranking in other categories
Firewall Security Management (6th)
Tenable Nessus
Ranking in Vulnerability Management
1st
Average Rating
8.4
Reviews Sentiment
6.1
Number of Reviews
85
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2025, in the Vulnerability Management category, the mindshare of Zafran Security is 0.9%, up from 0.0% 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 8.4%, down from 12.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
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.
HarshBhardiya - PeerSpot reviewer
Provided increased visibility across the organization's servers
The user interface of Tenable Nessus feels outdated and could be more user-friendly. Additionally, the documentation is not well-organized, which can be confusing when searching for solutions or specific information related to Tenable Nessus Professional. The reporting feature could be improved by allowing users to create their own templates instead of relying on predefined ones.

Quotes from Members

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

Pros

"Zafran has become an indispensable tool in our cybersecurity arsenal."
"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."
"We are able to see the real risk of a vulnerability on our environment with our security tools."
"Security review is the most important feature, because it offers a single pane of glass to analyze multiple firewalls."
"The revalidation and policy recertifications are most valuable."
"It's very supportive and very user-friendly."
"It shows me a client's or an organization's entire network. I can see everything."
"The most valuable features are Firewall Assurance and Vulnerability Control."
"The solution offers very nice dashboards and they've recently added a very good Java-based web interface."
"Aside from Firewall Assurance, we are using Network Assurance and Change Manager for an overview of the whole network and for documenting requests and the recertification of the ruleset."
"It can be integrated with a vulnerability management solution. When a client comes, apart from pitching network and firewall change management, we are recommending having vulnerability management. So, rather than just having the audit of the firewall, they can integrate it with their vulnerability management solution, which could be Rapid7, Qualys, or any other solution. This provides them the most value out of the platform. That is the way we are approaching our customer base."
"The solution is very stable."
"The reports are pretty nice and easy to understand."
"The solution can scale well."
"The trial version is very good for testing whether it will suit your needs."
"Tenable Nessus is cheap and flexible."
"I like this solution because it is complete. It can scan and check many types of vulnerabilities. It can also check for compliance."
"Its initial setup was simple and straightforward."
"Tenable Nessus has provided increased visibility across the organization's servers."
 

Cons

"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 dashboarding and reporting functionality of Zafran Security is an area that definitely could use some improvements."
"The company made bad business decisions impacting many clients and their own staff. Reporting could have been improved, and feature requests often were not implemented."
"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."
"If anything could be improved it would be staying on top of the collector scripts, but I understand that's a very tough challenge."
"The solution does not support certain devices or vendors in some regions or countries due to regulations."
"The price could be cheaper."
"Change Manager can be improved. If they can improve Change Manager so that whatever we want to do on a firewall, we are able to do it through Change Manager, it will be helpful for us. Whenever we are doing a change, it only does them at an L3 and L4 level, but all the firewalls are at the application layer. So, whatever needs to be done on the firewall, we aren't able to get it done through Change Manager. Currently, this functionality is not there because of which we are sometimes losing customers. I can create a role on Layer 3, Layer 4, but when it comes to the application layer, such as configuring and defining URLs or other things at the application level, it can't be done through Change Manager. Customers demand that they should be able to do everything through Change Manager. They don't want to do it through some other mechanism to accomplish their complete change management policy. They don't want to use a firewall manager because sometimes, they don't have any manager. They ask if they can use our solution so that a manager is not required. If Change Manager can do all the management automatically without involving any other manager, it will be great. They can also provide better integration with other managers so that everything can be done through a central point."
"The solution needs improvement in firewall configuration checks. I would also like to see more configuration checks for Forcepoint and for other non-supported firewalls."
"The Network Assurance, which helps to create the network model, is not so rich."
"It would be nice for the professional module to include some of the reports available in the expert module."
"The solution should be able to support more devices."
"One area that has room for improvement is the reporting. I'm preparing reports for Windows and Linux machines, etc. Currently, I'm collecting three or four reports and turning them into one report. I don't know if it is possible to combine all of them in one report, but that would be helpful."
"Multiple user access would be an area for improvement from a user-access perspective. A role-based access control feature would be great because at present, there is a limitation with only one account. If that account gets compromised or gets locked, then we will encounter problems."
"The tool needs to upgrade asset tracking."
"Tenable Nessus is not feasible for a large company."
"To be honest, I haven't used it much to tell you that these are the things that should be improved. But I believe the UI should be enhanced somewhat. For example, there are two ways to find a report, and people are frequently confused as to which is the correct method for locating a full report. Sometimes they go in the opposite direction, so this is an area that may be improved."
"Some things in the user interface could be better. The user interface could allow more adjustments to plugins. The price could also be better."
 

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."
"I rate the pricing two on a scale of one to ten, where one is very expensive, and ten is cost-effective."
"I would rate the tool's pricing an eight out of ten."
"Licensing is normally on a yearly basis. There may also be a perpetual license. Normally, the customers ask for a lower price. If you want to sell more, you have to think about it."
"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."
"Skybox comes with extra licenses and has a change management license. The licenses are expensive, but they come with extra value."
"I think for the cost, what we got definitely is worth it. The only caution I would give is that whenever you license for Firewall Assurance at the same time, for some weird reason, you have to get one Network Assurance license, just to manage one firewall. That's a little bit of overkill. But otherwise, in general, the pricing is fairly okay."
"Fully understand the total cost of ownership. They have gone to a new model where you have to replace the hardware every X amount of years at a very substantial cost and fully understand your intended number of nodes. To operate a firewall, you have to pay two licenses, a firewall node and a network node. If you are a reasonable-sized organization, this gets expensive very quickly."
"The solution is worth the cost. It's a good investment."
"Its price is high for Libya. The companies here in Libya don't have the awareness of and a good budget for cybersecurity services. If you want them to go for a product, you need to provide something different. This differentiation is related to the price. They should give about 40% to 45% discount per person on the current cost."
"The price of the solution is reasonable."
"The pricing is much more manageable versus other products."
"The newer tools are quite pricey. There is a case of some fine tuning that can be done in terms of licensing. The IP based licensing that is offered makes the tool very expensive. If they want the IT industry to adopt it, the price should be looked at."
"The price of the solution is reasonable."
"There is an annual license required to use this solution."
"Tenable Nessus is affordable."
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Top Industries

By visitors reading reviews
Financial Services Firm
10%
Computer Software Company
10%
Manufacturing Company
7%
Healthcare Company
6%
Financial Services Firm
17%
Computer Software Company
15%
Manufacturing Company
11%
Energy/Utilities Company
6%
Computer Software Company
12%
Financial Services Firm
11%
Manufacturing Company
10%
Government
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

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: July 2025.
865,164 professionals have used our research since 2012.