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Red Hat Advanced Cluster Security for Kubernetes vs Tenable Cloud Security comparison

 

Comparison Buyer's Guide

Executive Summary

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

Red Hat Advanced Cluster Se...
Ranking in Container Security
22nd
Average Rating
8.2
Reviews Sentiment
7.5
Number of Reviews
12
Ranking in other categories
No ranking in other categories
Tenable Cloud Security
Ranking in Container Security
24th
Average Rating
8.4
Reviews Sentiment
6.5
Number of Reviews
12
Ranking in other categories
Identity and Access Management as a Service (IDaaS) (IAMaaS) (12th), Cloud Workload Protection Platforms (CWPP) (11th), Cloud Security Posture Management (CSPM) (17th), Cloud-Native Application Protection Platforms (CNAPP) (13th), Cloud Infrastructure Entitlement Management (CIEM) (4th)
 

Mindshare comparison

As of October 2025, in the Container Security category, the mindshare of Red Hat Advanced Cluster Security for Kubernetes is 2.2%, down from 2.4% compared to the previous year. The mindshare of Tenable Cloud Security is 1.5%, up from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Container Security Market Share Distribution
ProductMarket Share (%)
Red Hat Advanced Cluster Security for Kubernetes2.2%
Tenable Cloud Security1.5%
Other96.3%
Container Security
 

Featured Reviews

Daniel Stevens - PeerSpot reviewer
Offers easy management and container connection with HTTPS, but the support needs to improve
I have experience with the solution's setup in Rio de Janeiro, Brazil and our company has assisted in the development of a cluster in a research department, but we didn't start from scratch because we have IT professionals who have installed Kubernetes across 12 nodes of a cluster and a new environment can be created for a new platform. I also had another setup experience of Red Hat Advanced Cluster Security for Kubernetes in Portugal where I had to implement the solution in a cluster of 22 computer servers, which was completed with assistance from the IT department of the company. The initial setup process of the solution can be considered as difficult. The setup process involves using the permissions, subnets and range of IPs, which makes it complex. Deploying Red Hat Advanced Cluster Security for Kubernetes takes around eight to ten hours for new clusters. The solution's deployment can be divided into three parts. The first part involves OpenStack, where the cluster's resources need to be identified. The second part involves virtualizing assets and identifying other physical assets, for which OpenStack, Kubernetes, or OpenShift are used. The third part of the deployment involves dividing the networks into subnetworks and implementing automation to deploy the microservices using Helm. The number of professionals required for the solution's deployment depends upon the presence of automated scripts. Ideally, two or three professionals are required to set up Red Hat Advanced Cluster Security for Kubernetes.
DragosCernat - PeerSpot reviewer
Has significantly improved proactive monitoring through automated asset discovery and seamless integration with cloud environments
Making the system smarter would be beneficial. Adding modules for integration with AWS and Azure would be helpful. Adding capabilities for the scanner to automatically pick up changes and add assets automatically would be valuable. When discussing a big company, it is mandatory to have tools that will assist us rather than waiting for manual input to add hosts. Adding assets manually is prone to mistakes. Humans might forget to add an asset or make errors when adding multiple assets. Taking the human element out of the context and making it more streamlined is the future for security. The human should be involved where expertise is needed, such as analysis and decision-making. Currently, with resource constraints, we need tools to collect and aggregate data, eliminate false positives as much as possible, and present relevant information to employees for action.

Quotes from Members

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

Pros

"Offers easy management with authentication and authorization features"
"The most valuable feature of the solution is its monitoring feature."
"I like virtualization and all those tools that come with OpenShift. I also like Advanced Cluster Management and the built-in security."
"The most valuable feature is the ability to share resources."
"Scalability-wise, I rate the solution a nine out of ten."
"The technical support is good."
"The most beneficial security feature of the product revolves around the areas of vulnerability and configuration."
"I am impressed with the tool's visibility."
"The tool alerts us on depreciating performance or deficiencies of our web application. It helps us react on time."
"Scanning and reporting are the most valuable features of Tenable Cloud Security"
"The solution’s vulnerability management feature has helped us identify and mitigate risks well."
"If you have multi-cloud tenancy using AWS and Azure, you can have a single dashboard where you can onboard all the cloud infrastructure and have visibility into it."
"Element is precisely what we needed for close to real-time external surface monitoring, and the automatic integration capabilities, particularly with DNS, Azure, and AWS, are extremely valuable."
"Tenable Cloud Security excels in vulnerability detection, one of its strongest features. Another valuable feature is software composition analysis, which highlights and automates the detection of security flaws. Additionally, their knowledge base is excellent; if anything goes wrong, they provide clear guidance on what needs to be done to address specific vulnerabilities."
"Ermetic can provide super visibility for our cloud environment (we are using AWS)."
"The product's visibility and remediation work fine for me."
 

Cons

"The testing process could be improved."
"The tool's command line and configuration are hard for us to understand and make deployment complex. It should also include zero trust, access control features and database connectivity."
"The support and specifications need to be up to date for the cluster technologies"
"The solution's visibility and vulnerability prevention should be improved."
"They're trying to convert it to the platform as a source. They are moving in the direction of Cloud Foundry so it can be easier for a developer to deploy it."
"The solution lacks features when compared to some of the competitors such as Prisma Cloud by Palo Alto Networks and has room for improvement."
"The deprecation of APIs is a concern since the deprecation of APIs will cause issues for us every time we upgrade."
"The solution's price could be better."
"I do think there might be room for more integrations. This could allow for further customization and flexibility, essentially offering different functionality options to accommodate various budgets."
"We still maintain Tenable Cloud Security but have reduced the number of licenses. We now use it occasionally to validate specific items rather than monitoring the entire surface, for which we use Element."
"Due to its robust nature, the platform's adoption can be overwhelming initially. However, once organizations start using it, they tend to get used to it. I haven't had much direct interaction with the support team, but some partners have reported a desire for better support for the product."
"Tenable needs to offer a patch-based solution since it is an area where the tool lacks a bit."
"The product must provide more features."
"In my experience, Tenable Cloud Security is not very stable."
"Ermetic needs to improve its security scanning. I would like to see more dynamic graphical forms."
"I have faced several bug incidents with the solution"
 

Pricing and Cost Advice

"It's a costly solution"
"The price of Red Hat Advanced Cluster Security for Kubernetes is better than Palo Alto Prisma."
"We purchase a yearly basis license for the solution."
"The pricing model is moderate, meaning it is not very expensive."
"Red Hat offers two pricing options for their solution: a separate price, and a bundled price under the OpenShift Platform Plus."
"The tool's price is good compared to other brands. The tool's subscription is for a year."
"There is a need to opt for a subscription-based pricing model to use Tenable Cloud Security. I rate the product price an eight on a scale of one to ten, where one is low price and ten is high price."
"The tool's pricing is fair."
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Top Industries

By visitors reading reviews
Financial Services Firm
27%
Computer Software Company
10%
Government
9%
Manufacturing Company
7%
Computer Software Company
13%
Government
11%
Financial Services Firm
10%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise2
Large Enterprise4
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise5
 

Questions from the Community

What do you like most about Red Hat Advanced Cluster Security for Kubernetes?
I like virtualization and all those tools that come with OpenShift. I also like Advanced Cluster Management and the built-in security.
What needs improvement with Red Hat Advanced Cluster Security for Kubernetes?
From an improvement perspective, I would like to create new policies in the tool, especially if it is deployed for the prevention part, but currently, we need to do it manually. I hear that Palo Al...
What is your primary use case for Red Hat Advanced Cluster Security for Kubernetes?
I use the solution in my company for vulnerability management, configuration management, compliance, safety handling, and everything else.
What do you like most about Tenable Cloud Security?
The solution’s vulnerability management feature has helped us identify and mitigate risks well.
What needs improvement with Tenable Cloud Security?
I think Tenable Cloud Security could be improved with more clear licensing. What I would like to see improved with licensing is how they're used in the product. The calculations of what is consider...
What is your primary use case for Tenable Cloud Security?
My main use case for Tenable Cloud Security is managing our security compliance and security posture. I use Tenable Cloud Security for managing compliance and security posture, and we rely on the c...
 

Also Known As

StackRox
Ermetic, Ermetic Identity Governance for AWS
 

Overview

 

Sample Customers

City National Bank, U.S. Department of Homeland Security
Tyler Technologies, Bilfinger, BarkBox, MongoDB, airSlate, Adama, Latch, Cloudinary, Riskified, AppsFlyer, IntelyCare, Aidoc, 42Dot, and more.
Find out what your peers are saying about Red Hat Advanced Cluster Security for Kubernetes vs. Tenable Cloud Security and other solutions. Updated: September 2025.
869,566 professionals have used our research since 2012.