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NetWitness Platform vs Security Onion comparison

Why PeerSpot?
 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

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

NetWitness Platform
Ranking in Log Management
36th
Average Rating
7.4
Reviews Sentiment
7.4
Number of Reviews
36
Ranking in other categories
Security Information and Event Management (SIEM) (34th)
Security Onion
Ranking in Log Management
22nd
Average Rating
7.8
Reviews Sentiment
7.2
Number of Reviews
4
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2026, in the Log Management category, the mindshare of NetWitness Platform is 1.1%, up from 0.4% compared to the previous year. The mindshare of Security Onion is 1.7%, down from 4.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Log Management Mindshare Distribution
ProductMindshare (%)
Security Onion1.7%
NetWitness Platform1.1%
Other97.2%
Log Management
 

Featured Reviews

reviewer2256927 - PeerSpot reviewer
Head of Information Security, Cyber Defense and IT Risk Management at HCT. at a transportation company with 201-500 employees
A solid SIEM solution that should improve technical support and online resources to be easier to use
A big problem with the product is that we don't have much professional experience in Israel installing, implementing, and integrating this product. There is not enough of a knowledge base. There is no support for this product in this country, so problems have to be resolved through global technical teams. We like to work locally because of the language, and when the product is only supported outside the country, it's a little difficult to implement and use this product. Moreover, AI is something that must be added immediately. Artificial intelligence is a part of the competitors' products, and it's not been implemented for us.
Hiten Nandasana - PeerSpot reviewer
Angular developer at Flourish software
Centralized monitoring has strengthened threat detection and supports faster incident investigations
Security Onion is a completely open-source and free platform, making it a cost-effective solution that works smoothly and effectively for our organization. Security Onion integrates well with our existing tools, primarily using Linux systems in our organization, allowing us to monitor logs and manage threat detection and operations in the public cloud effectively. Security Onion is very helpful in meeting compliance requirements and supports regular standards for our environment. I advise organizations that use Linux or have network security knowledge to consider Security Onion, as it satisfies requirements such as threat detection and log management systems. I would rate this review eight out of ten.

Quotes from Members

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

Pros

"Technically speaking, this is a good product."
"The product has a user-friendly interface and a valuable feature for threat intelligence integration."
"Overall, it is easy to implement."
"This solution has a very good dashboard with a separate tab for incidents and alerts."
"The most valuable feature is the security that it provides."
"It's quite economical compared to other solutions in the market."
"Alerting Module: It provides real-time event processing language on all the logs/packets stream for advanced alerting, i.e., using SQL LIKE statements."
"What we are mainly using are the RSA concentrator, RSA Decoder, Archiver, Broker, and Log Decoder."
"The most valuable feature of Security Onion for security monitoring is its ability to find infected ports."
"Security Onion is the most mature solution in the market."
"We use Security Onion for internal vulnerability assessment."
"Security Onion is a completely open-source and free platform, making it a cost-effective solution that works smoothly and effectively for our organization."
 

Cons

"The product continues to crash. Even with tech support help, it does not resolve itself."
"Advance monitoring and alerting feature is not stable (Event Stream Analysis)."
"The threat detection capability and centralizing and upgrading capability need to be improved. The threat alert capability needs to be improved as well because there is some lag time at present. They need to work on their database search too."
"The initial setup was complex because it takes a lot of time to complete the implementation."
"There is no support for this product in this country, so problems have to be resolved through global technical teams."
"I am not happy with the RSA support. Sometimes they can be really annoying because it takes so long to get the support that you need."
"The multi-tenant capabilities are lagging compared to IBM QRadar."
"I believe they could improve their support, there are often delays."
"The initial setup of the solution is a little bit difficult."
"Security Onion's user interface could be improved."
"Security Onion can be made easier to set up initially, as it is somewhat difficult at the start, but once configured, it becomes a great tool to use."
"The product is not easy to learn."
 

Pricing and Cost Advice

"Our license is for one year."
"The product is expensive."
"Compared to the competition, the is price is not that high."
"We have a perpetual license, so the total cost of ownership is not very expensive. It's a good investment."
"The licenses are good but the cost is very expensive."
"The NetWitness Platform may be affordable only for enterprise-level customers, as it may not be within the budget of small and medium-sized businesses."
"It’s cheaper to run virtual machines in a VMware environment."
"RSA NetWitness Logs and Packets do not have a subscription model, it's a one-time purchase. There is only a perpetual license."
"Security Onion is a free solution."
"It is an open-source solution."
"Security Onion is an open-source solution."
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Comparison Review

VS
Manager, Enterprise Risk Consulting at a tech company with 1,001-5,000 employees
Feb 26, 2015
HP ArcSight vs. IBM QRadar vs. ​McAfee Nitro vs. Splunk vs. RSA Security vs. LogRhythm
We at Infosecnirvana.com have done several posts on SIEM. After the Dummies Guide on SIEM, we are following it up with a SIEM Product Comparison – 101 deck. So, here it is for your viewing pleasure. Let me know what you think by posting your comments below. The key products compared here are…
 

Top Industries

By visitors reading reviews
Construction Company
13%
Financial Services Firm
11%
Comms Service Provider
11%
Outsourcing Company
10%
Comms Service Provider
12%
University
12%
Government
10%
Construction Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise7
Large Enterprise20
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for NetWitness Platform?
The pricing is comparable to others, and I consider the cost to be intermediate. Specific cost details are unknown to me.
What needs improvement with NetWitness Platform?
There is currently no need for improvement in the SIEM ( /categories/security-information-and-event-management-siem ), though there could be potential enhancements by integrating with AI.
What is your primary use case for NetWitness Platform?
I use NetWitness Platform ( /products/netwitness-platform-reviews ) in the financial industry as a good product with excellent capabilities and integration with various devices.
What is your experience regarding pricing and costs for Security Onion?
Security Onion does not require any cost, as it is open-source and free.
What needs improvement with Security Onion?
Security Onion can be made easier to set up initially, as it is somewhat difficult at the start, but once configured, it becomes a great tool to use. I assigned a rating of eight out of ten because...
What advice do you have for others considering Security Onion?
Security Onion is a completely open-source and free platform, making it a cost-effective solution that works smoothly and effectively for our organization. Security Onion integrates well with our e...
 

Also Known As

RSA Security Analytics
No data available
 

Overview

 

Sample Customers

Los Angeles World Airports, Reply
Information Not Available
Find out what your peers are saying about NetWitness Platform vs. Security Onion and other solutions. Updated: September 2026.
914,109 professionals have used our research since 2012.