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Nozomi Networks vs Tenable OT Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jul 10, 2024

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

Nozomi Networks
Ranking in Operational Technology (OT) Security
1st
Average Rating
9.0
Reviews Sentiment
6.9
Number of Reviews
8
Ranking in other categories
IoT Security (1st)
Tenable OT Security
Ranking in Operational Technology (OT) Security
4th
Average Rating
8.6
Reviews Sentiment
6.6
Number of Reviews
7
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Operational Technology (OT) Security category, the mindshare of Nozomi Networks is 23.3%, down from 29.1% compared to the previous year. The mindshare of Tenable OT Security is 9.2%, down from 12.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operational Technology (OT) Security Market Share Distribution
ProductMarket Share (%)
Nozomi Networks23.3%
Tenable OT Security9.2%
Other67.5%
Operational Technology (OT) Security
 

Featured Reviews

German Alvarez - PeerSpot reviewer
Security Specialist at a tech consulting company with 51-200 employees
Effective asset management improves OT security by quantifying risks and identifying unauthorized communications
Nozomi Networks currently offers add-ons, such as ARP agents, that can be installed on machines to expand the information we receive from sensors. However, these are part of a licensing structure, which can be costly. It would be very helpful if these agents were available free of charge. The solution itself has no major problems, but this is a feature request I would make for improvement.
AP
Senior Consultant at Payatu
Enables cost-effective asset and threat management while requiring improvements in support and training
The time it takes to train itself is a concern. Initially, it will not identify many assets, as it needs time to read the information before finding the assets. Some detections can go wrong, and it may not understand certain industrial protocols. While installation and deployment are easy, upgrading from one version to another can be challenging. When you assure clients they will receive minus two upgrades, sometimes upgrading through the cloud becomes difficult, requiring on-site upgrades. During upgrades, the previous configuration may be lost, creating support issues.

Quotes from Members

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

Pros

"The tool's visibility is good. We can see the traffic flow."
"I chose Nozomi because it is far ahead of other competitors, like Curator and Elastic."
"Nozomi Networks is an easy-to-use and powerful tool."
"The most valuable features of Nozomi Networks are the visibility of OT protocols and the versatility in finding the details of the assets feeding the tool."
"Provides security for our operational technology environment for OT and IoT."
"The network visualization feature of Nozomi impacts security operations positively."
"It has impacted security operations in a better way."
"The feature I like best is its stability."
"The active query inventory is the most valuable feature."
"I like Tenable OT Security for two main reasons. Firstly, it helps identify vulnerabilities and risks for IT and OT assets, which is crucial for our operations. Secondly, it performs external port scanning, including vulnerability scans for open ports. Compared to the Claroty Platform, the tool offers detailed asset discovery capabilities."
"The product has easy-to-manage features and components."
"It's for securing the vulnerability of the OT solutions they are using. We mitigate those through patch management activities and find vulnerabilities easily with this security solution."
"The initial setup was very easy, and I would rate it a ten out of ten."
"The biggest advantage is that with good infrastructure, you can utilize asset planning when using Nessus along with Tenable OT Security."
"The clear distinction between IT and OT that Tenable OT provides is its most valuable feature."
"The product’s price is its most valuable feature."
 

Cons

"I would like more customizable options for configurations."
"It should support more programmable logic controllers (PLCs)."
"The solution should include an integration library."
"I believe there is room for improvement regarding on-premises AI."
"Nozomi Networks should improve its pricing."
"Nozomi Networks currently offers add-ons, such as ARP agents, that can be installed on machines to expand the information we receive from sensors. However, these are part of a licensing structure, which can be costly."
"Proof of concept could be improved. It could be more tangible to the customer and the end users to have a video presentation or something like that."
"Creating custom queries is time-consuming."
"As an IT security professional, I would like to see automation improvements in the response part of Tenable OT Security. However, I understand that implementing automation in OT environments can be quite challenging."
"During upgrades, the previous configuration may be lost, creating support issues."
"Tenable OT product is good, but OT security itself is still maturing."
"Tenable.ot's integration with one of the products needs improvement."
"As an IT security professional, I would like to see automation improvements in the response part of Tenable OT Security."
"Tenable OT Security is fine, but I find it more language-based rather than structured. It feels like something is on a web page, and the dashboards and data representations are not cool. First of all, I said that the tool view should be improved. It looks pretty old. Second, the details Tenable OT Security provides regarding the metadata they work with should be more in-depth. Its main focus is vulnerability management, which is fine, but what about threat actors? What about attack vectors and OT vulnerabilities? There are major areas, baselines, etc. that need attention."
"The solution could detect changes in reading variables. The support of IoT devices can be improved."
"The solution should provide more features to prevent attacks."
 

Pricing and Cost Advice

"The solution's pricing is good and cheaper than that of Claroty."
"I have not seen any competition in terms of pricing, and it is quite reasonable."
"The product is inexpensive."
"The tool's pricing is fair enough."
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881,082 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Manufacturing Company
15%
Energy/Utilities Company
12%
Computer Software Company
9%
Financial Services Firm
6%
Energy/Utilities Company
16%
Manufacturing Company
16%
Computer Software Company
9%
Retailer
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Large Enterprise2
By reviewers
Company SizeCount
Small Business4
Large Enterprise4
 

Questions from the Community

What is your experience regarding pricing and costs for Nozomi Networks?
Nozomi Networks is priced moderately. Its cost is not too expensive, but it is not low either.
What needs improvement with Nozomi Networks?
Nozomi Networks currently offers add-ons, such as ARP agents, that can be installed on machines to expand the information we receive from sensors. However, these are part of a licensing structure, ...
What is your primary use case for Nozomi Networks?
We use Nozomi Networks ( /products/nozomi-networks-reviews ) in our operational technology environment to manage the inventory of assets in our plants and conduct vulnerability assessments and risk...
What do you like most about Tenable OT Security?
The product’s price is its most valuable feature.
What is your experience regarding pricing and costs for Tenable OT Security?
Considering the cost and that it is affordable, I would rate it at seven.
What needs improvement with Tenable OT Security?
The time it takes to train itself is a concern. Initially, it will not identify many assets, as it needs time to read the information before finding the assets. Some detections can go wrong, and it...
 

Also Known As

SCADAguardian
Tenable.ot
 

Overview

 

Sample Customers

Enel, FireEye, GlaxoSmithKline, VEC, TAGSEC Group
Nesher Cement Enterprises, City of Raleigh
Find out what your peers are saying about Nozomi Networks vs. Tenable OT Security and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.