Over 15.000 active assets|inside 10 companies belonging to the group, the biennium recurrent project mapped the real situation, in parallel with photography of IT/Security maturity through three main domains: processes, people, and technology. 5 TOEs: Infrastructure, Databases (SQL and Oracle in deep), AWS Cloud, Connectivity (Routers, Switches, and Firewalls against/based CIS) and Web Application instances (partial tests). Nessus running over a hardened Linux customized with HA (High Availability).
Information Security Manager at a retailer with 10,001+ employees
Tests against cloud providers, database profiles, several types of telecom devices, and other highly customizable scans
Pros and Cons
- "Scanners and reports using CIS templates ("de-facto" standard, easy to fix and to locate correction tips at documentation), tests against cloud providers, database profiles, several types of telecom devices, and others highly customizable scans."
- "Model OS costs (and its segregation schema for individual modules)."
What is our primary use case?
How has it helped my organization?
Nessus has more plugins/add-ons, tests, and templates than previous tools (OpenVas) and it is faster and customizable using CLI/API features. It offers enough resources for an interesting cost-benefit rating (for small and medium companies) and minus false-positive events per type of asset.
It helped us to quickly produce a QuickWin report that guided the VulnerabilityMgmt actions and plans within the company's during the next 3-5 years using the same tool/investment/team for all companies inside the de group.
What is most valuable?
Scanners and reports using CIS templates ("de-facto" standard, easy to fix and to locate correction tips in the documentation), tests against cloud providers, database profiles, several types of telecom devices, and other highly customizable scans. You can scale your environment to gradually increase the quality, depth, and quantity of the tests, enabling you to learn and gradually optimize your vulnerability management platform(s)/instance(s). The possibility of integration with other market tools (Kenna, Archer...) is another differential.
What needs improvement?
- Add the possibility to customize attributes that define the assets critical level based on the company's "business sense".
- Improve integration and tests for OT platforms, OT application, OT hardware, and non-Ethernet protocols.
- Improve the exchange of info/insights/attributes with RM (Risk Management) domain.
- Offer a more flexible strategic and high-level dashboards based on previous comments (minus technical and more business-oriented)
- Model OS costs (and its segregation schema for individual modules).
Buyer's Guide
Tenable Nessus
June 2025

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For how long have I used the solution?
7+ years with Tenable and more than 15y with others.
What do I think about the stability of the solution?
Excellent. No one problem during operation time and deployment.
What do I think about the scalability of the solution?
Enough (faster than OpenVAS engine).
How are customer service and support?
It SLA/support are enough.
How would you rate customer service and support?
Neutral
Which solution did I use previously and why did I switch?
OpenVAS. We reached the previous level/threshold/maturity using OpenVas (more limited tool when compared with Nessus). I/We believe that, the change to a better tool (in this and in others categories) should be carried out when these indicators are reached.
How was the initial setup?
Very simple and fast.
What about the implementation team?
In-house.
What was our ROI?
Good. Nessus Pro combined with other xLAP solutions to offer a presentation/grouping layer is great. Using SC this curve/point of ROI is slower.
What's my experience with pricing, setup cost, and licensing?
Start small, learn about your problems/fixing time and grow up gradually.
Which other solutions did I evaluate?
Several. OpenVas, Rapid7, Qualys, CORE* and Retina.
What other advice do I have?
A cost/benefit interesting tool.
Which deployment model are you using for this solution?
On-premises
If public cloud, private cloud, or hybrid cloud, which cloud provider do you use?
Other
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Senior Consultant - Cyber Security Services at a computer software company with 10,001+ employees
The most dynamic solution on the market
Pros and Cons
- "The solution is the most dynamic one I have seen thus far."
- "EQA's and dashboards should be addressed in the next release."
What is our primary use case?
We primarily use the solution for our customer vApp, the dynamic application testing using NetWeb application and security and the infra scanning. It allows us to do a weekly scan for our customers.
How has it helped my organization?
The solution was a great help during the pandemic for closing down all those open vulnerabilities. Continuous scanning of the infra was helpful for identification on the web applications level.
What is most valuable?
The solution is the most dynamic one I have seen thus far. It is one of the best available solutions. It is the best vulnerability tool that is available at present.
What needs improvement?
While Tenable Nessus is a good enterprise solution, the high price would likely make it prohibitive to smaller organizations.
We feel the licensing cost to be too high for our customers and us.
EQA's and dashboards should be addressed in the next release.
For how long have I used the solution?
We have been using Tenable Nessus for four or five years. I believe that our practice team is doing so.
What do I think about the stability of the solution?
The solution is highly reliable.
What do I think about the scalability of the solution?
Scalability is not an issue.
How are customer service and support?
Tech support is good. I think we are now partnered with Tenable.
How was the initial setup?
The initial setup was straightforward. The solution was very easy to set up and configure.
What's my experience with pricing, setup cost, and licensing?
We have a yearly subscription license.
We have a partnership for filling Tenable Nessus as a manager product for our customers.
Though it is a good enterprise solution, it is likely too highly priced for smaller organizations.
We feel the licensing cost to be too high for our customers and us.
What other advice do I have?
We have both on-premises and cloud-based deployment in our organization.
The solution is good.
I rate Tenable Nessus as a nine out of ten.
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Buyer's Guide
Tenable Nessus
June 2025

Learn what your peers think about Tenable Nessus. Get advice and tips from experienced pros sharing their opinions. Updated: June 2025.
859,579 professionals have used our research since 2012.
Senior Partner
Overall great solution, plenty of features, and free options
Pros and Cons
- "Overall Zoom is a good solution."
- "I have found it is sometimes difficult to control the Zoom meeting sessions. For example, it is difficult to know who is talking and when trying to mute everyone but the speaker you end up muting everyone. When using multiple screens it is laborious to find the control buttons, such as to start a session. Additionally, when a recording is done I have found it difficult to find them, there should be an easier way to retrieve them."
What is our primary use case?
I use Zoom for virtual meetings.
What is most valuable?
Overall Zoom is a good solution.
What needs improvement?
I have found it is sometimes difficult to control the Zoom meeting sessions. For example, it is difficult to know who is talking and when trying to mute everyone but the speaker you end up muting everyone. When using multiple screens it is laborious to find the control buttons, such as to start a session. Additionally, when a recording is done I have found it difficult to find them, there should be an easier way to retrieve them.
In a future release, the recordings should be able to be enhanced. I am not fully sure if it is the speed of the network or what the challenge is but we record our Zoom meetings and then I edit them to make them into a presentation. There are times when people are grainy, or their sound is not the best. Zoom should have an optimization option for those wanting to do recordings to allow them to receive the best experience. Alternatively, they could give tips on the best configuration settings for the highest recording output quality. For example, Is the user using the most current version of Zoom, or have they blocked out the background noise.
For how long have I used the solution?
I have been using Zoom for approximately 10 years.
Which solution did I use previously and why did I switch?
I have used Teams, ON24, and Citrix.
What's my experience with pricing, setup cost, and licensing?
The solution has free options.
What other advice do I have?
Zoom is a great solution. I did appreciate during the pandemic they offered it for free for a certain amount of callers. I thought that gesture was really great.
I rate Zoom a ten out of ten.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Senior Cyber Security Expert at a security firm with 11-50 employees
Easy to install, reliable, helpful support, and has a good assessment tool
Pros and Cons
- "Tenable Nessus is one of the best vulnerability assessment tools, that I know."
- "They need more flexible pricing."
What is our primary use case?
We use this solution for information gathering and as an assessment tool.
What is most valuable?
Tenable Nessus is one of the best vulnerability assessment tools, that I know.
What needs improvement?
The price could be improved. They need more flexible pricing.
If they had a very creative idea, maybe they could add a special feature. Even extending functions, or exploring new areas. If they were able to integrate it with the existing solution, that would be fine.
I would like to see more integrations, more ideas or services, and functions offered.
It's about wider functionality and not a question of integration. It's more a question of, creativity. If they have other ideas such as what could be added to the vulnerability management.
For how long have I used the solution?
I have been using Tenable Nessus for five years.
What do I think about the stability of the solution?
Tenable Nessus is a stable product.
What do I think about the scalability of the solution?
It's a scalable solution.
Nessus we either use Nessus for projects for ourselves in many situations, and they also deliver Nessus as a solution for at least five clients. We also have approximately 10 users in our organization.
How are customer service and technical support?
My experience with technical support is very positive.
How was the initial setup?
The installation was easy.
It took approximately six hours to install and deploy.
We need two for the deployment and maintenance, we have two or three people.
What's my experience with pricing, setup cost, and licensing?
In general, it is extremely expensive. If they have a higher price, that's fine, but if there were one or two solutions where you can buy something for a cheaper price then that would make sense for many users.
I understand why it's expensive, but it would be good to have a limited solution with cheaper prices.
There are different solutions for purchasing Nessus, which is not possible with Datadog.
What other advice do I have?
I would recommend this solution to others.
I would rate Tenable Nessus a nine out of ten because it has many dimensions.
Which deployment model are you using for this solution?
Hybrid Cloud
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Assistant Manager of Information Security at a pharma/biotech company with 1,001-5,000 employees
Great scanning capabilities for servers, but limited when it comes to networks
Pros and Cons
- "The solution is great for scanning servers."
- "The features are limited when it comes to scanning network devices for vulnerabilities."
What is our primary use case?
As new upgrades to the software come out periodically, I am currently using the latest version.
What is most valuable?
I feel comfortable with the solution's vulnerability scanning capabilities.
What needs improvement?
While the solution is great for scanning servers, its features are limited when it comes to scanning network devices for vulnerabilities.
For how long have I used the solution?
I have been using Tenable Nessus since 2015.
How are customer service and technical support?
I can say that I am satisfied with Tenable Nessus' support and customer relations, which is why I'm still with the solution.
Technical support is very user-friendly. Upon entering their forum I can easily find the answers I seek, which I feel to be understandable and helpful. I have not any issues with the software that would have given me reason to engage technical support.
Which solution did I use previously and why did I switch?
I did not use an alternate solution prior to Tenable Nessus and have been using it since the inception of my career in information security.
How was the initial setup?
The installation of the solution was extremely easy.
What about the implementation team?
There was no need for me to involve my system administrator in the installation process, as I was able to handle it on my own. It is easy to install the solution on any server.
What's my experience with pricing, setup cost, and licensing?
The price is reasonable.
What other advice do I have?
I am actually using the solution in three or four different organizations, including Engro and Martin Dow.
There are two or three people using the solution in my organization on an ongoing basis in key dedicated positions.
As Tenable Nessus lacks adequate network vulnerability scanning features, I rate it as a seven out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Senior Manager at a consultancy with 501-1,000 employees
Geared for use in small environments
Pros and Cons
- "Tenable Nessus is an absolutely stable and fantastic product."
- "Tenable Nessus is not feasible for a large company."
What needs improvement?
While Nessus produces good software, I would like it to allow me to better utilize my homepage. The report structures should be more gradual and effective. Also, other components, such as certain vulnerabilities and Malware detection, should better reflect on the console or dashboard. Nessus does not make this available as there is no centralized dashboard. So too, I require a cloud-based Tenable product, not the one available, which is on-premises.
We have already entered an agreement with Nessus for Tenable.io., following contact I established with South Boston.
Once a person takes part in the demo offered by Tenable.io, we are talking about, more or less, VAS software. The VAS feature is absolutely nice. We have already addressed the coming roadmap with Nessus and it will not include these features. Consequently, perhaps Tenable.io will be the next step. Users such as ourselves will definitely be looking at a different application.
For how long have I used the solution?
I have been using the solution for the past four years.
What do I think about the stability of the solution?
Tenable Nessus is an absolutely stable and fantastic product. As a customer I would give it a 90 percent out of 100 rating. This is because we have been really satisfied with its use over the past four years. The company and market standards are growing and the margin standard is going up.
Tenable Nessus is competitively slower than Tenable.io.
What other advice do I have?
We are currently trying to procure Tenable.io from Nessus.
I would definitely recommend Tenable Nessus to those who are operating in small environments, with like-sized infrastructure.
When it comes to a big company we should look towards OpenView. Tenable Nessus is not feasible for a large company. For a team comprising 1,000 people, it would be too unstable. Instead, Tenable.io. would be the appropriate choice since it contains a completely different infra.
I rate Tenable Nessus as an eight out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Lead Cyber Security engineer at a tech services company with 201-500 employees
Easy to understand but is lacking technical support
Pros and Cons
- "A valuable feature of the solution is that it is easy to understand."
- "We feel the solution's technical support to be very bad."
What is our primary use case?
We usually use the solution for infrastructure level and web application scanning, although mostly for the former. This is what we are doing at present. We were using the web application portion of Tenable Nessus for several months before switching to Veracode.
What is most valuable?
A valuable feature of the solution is that it is easy to understand. When it comes to running a scan, the scanning mechanism is also easy, and it is quite fast compared to Veracode and Qualys.
What needs improvement?
The solution should have a more in-depth level of scanning, with features to meet the developers. Other points that should be addressed involve the understanding of issues by the users and the need for improvising the reporting structure. The reports should also be more attractive and user-friendly.
This is how Tenable Nessus occasionally works when drawing up something on the field.
Additional features I wish to see addressed in the next release include customer support and ease of understanding of vulnerabilities and how they can be fixed.
In contrast to Tenable Nessus, we have found Veracode to be more user-friendly, with a greater in-depth understanding of the details and how things can be fixed. Other points in its favor include study cases, customer support, training and e-learning.
The solution is sort of down the mid range, so we are more happy with Veracode.
For how long have I used the solution?
We have made use of Tenable Nessus over the past 12 months, and started doing so a couple of months before we got Veracode.
What do I think about the stability of the solution?
The solution is reliable and has good stability.
What do I think about the scalability of the solution?
We have been in the web, so we have not tried to expand the solution.
How are customer service and technical support?
We feel the solution's technical support to be very bad.
While we do receive a response upon creating a ticket, it is not like that of Qualys or Veracode. That extensive support is not there.
How was the initial setup?
The initial setup was straightforward.
We deployed under the release plan of 8.11.
What's my experience with pricing, setup cost, and licensing?
We incurred a single cost for a perpetual license, although I cannot comment on the price as this is above my management level.
What other advice do I have?
There are at least ten people in our organization making use of the solution.
Tenable Nessus is an appropriate solution for a small scale company, one with budgeting constraints and no complexities within the organization. It not that user-friendly.
I would rate Tenable Nessus as a seven out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Director at Data Connect Technologies Pte Ltd
Good reports that are easy to understand, straightforward to set up, and scales well
Pros and Cons
- "The reports are pretty nice and easy to understand."
- "The price could be reduced."
What is our primary use case?
We use Tenable Nessus when we are preparing our audit where we need to do an initial scan of our customers' platform to see if they have any critical issues.
What is most valuable?
The reports are pretty nice and easy to understand.
What needs improvement?
The price could be reduced.
For how long have I used the solution?
I have been using Tenable Nessus for approximately 20 years, since the time that it was first released.
What do I think about the stability of the solution?
This solution is stable. We do not have any issues with the stability of this solution.
What do I think about the scalability of the solution?
It's a scalable product. We have approximately 300 companies.
How are customer service and technical support?
I have yet to contact technical support. The users within my team are technical people, and if they have an issue, they can resolve it themselves using the knowledge base.
How was the initial setup?
The initial setup is straightforward. It is very easy.
It takes less than 10 minutes to install.
What about the implementation team?
I am the consultant.
We have a team of two to three to deploy and maintain this solution.
What's my experience with pricing, setup cost, and licensing?
We have a subscription, the licensing fees are paid yearly, and I am using the latest version.
The pricing is fine, but it could be cheaper.
What other advice do I have?
So far, I am quite pleased with this product and don't have any complaints. I would recommend this solution to others who are interested in using it.
I would rate this solution a nine out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner

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Updated: June 2025
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Learn More: Questions:
- Qualys VM vs Tenable Nessus: Comparison
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- What are the main KPIs that need to be implemented to have better posture in vulnerability projects?
Authenticated users are a excellent way for you increase the quality and depth of your scanner. You can add/use cloud providers API-keys during tests, local or AD users/credentials with database, telecom devices and other types of digital assets. Normally, the difference between non/authenticated-scans is widely big.