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IBM Security QRadar vs Security Onion comparison

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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

IBM Security QRadar
Ranking in Log Management
5th
Average Rating
8.0
Reviews Sentiment
6.6
Number of Reviews
218
Ranking in other categories
Security Information and Event Management (SIEM) (2nd), User Entity Behavior Analytics (UEBA) (3rd), Endpoint Detection and Response (EDR) (11th), Security Orchestration Automation and Response (SOAR) (4th), Managed Detection and Response (MDR) (8th), Extended Detection and Response (XDR) (9th)
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 October 2026, in the Log Management category, the mindshare of IBM Security QRadar is 4.5%, up from 3.8% compared to the previous year. The mindshare of Security Onion is 1.6%, down from 4.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Log Management Mindshare Distribution
ProductMindshare (%)
IBM Security QRadar4.5%
Security Onion1.6%
Other93.9%
Log Management
 

Featured Reviews

HarshBhardiya - PeerSpot reviewer
SOC Engineer at a outsourcing company with 10,001+ employees
Have managed daily asset and alert monitoring effectively but have encountered limitations with manual processes and interface usability
It's still very manual and doesn't work on its own. It's still in an early stage and not on par where we can consider it a really successful detection system. The accuracy is not there. The UI could be better when compared to Sentinels where we can use flags and tagging. It could be much more user-friendly. IBM Security QRadar has all features and is fully competitive with other SIEM tools, but when it comes to user-friendliness, a new user takes time to get used to it. More intuitive, user-friendly interfaces and more helpful documentation would be beneficial. The query searching and data fetching could be faster. In large to very large organizations with around 5,000 or 6,000 assets or beyond, even with proper configurations and RAM and hardware backing up, the query is fairly slow.
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

"It is a pretty solid product for the type that it is representing. It is a CM solution as compared to Splunk or ArcSight from HP. It is also user friendly. It comes with some internal AI as well, in which it automatically maps multiple lots from unrelated devices and makes a smart decision to link them back and create an offense based on that. It is a smart tool."
"Overall a great solution."
"It is a very good SIEM."
"The solution supports MSSP models, which most service providers have, meaning that a single system can be onboarded for all 200 existing customers for monitoring purposes."
"The most valuable features would have to be the products' ability to customize vulnerability management settings."
"A nice benefit is when we go to the process of selecting our youth cases, they go by building blocks. QRadar links it to building blocks."
"The visibility it gives you into your infrastructure has been great, and the notifications it provides offer valuable information when something is happening in your blind spot."
"The IBM QRadar Licensing for the core Events(EPS) and Flows(FPS) is per second based, the licensing is perpetual and surely expensive but the output of the product makes it worth your money."
"Security Onion is the most mature solution in the market."
"The most valuable feature of Security Onion for security monitoring is its ability to find infected ports."
"Security Onion is a completely open-source and free platform, making it a cost-effective solution that works smoothly and effectively for our organization."
"We use Security Onion for internal vulnerability assessment."
 

Cons

"The technical support can be improved a little bit, and the price could be cheaper."
"Search capability and indexing still lag behind competitors. We also need to see improved rule based access controls and rule/event tuning."
"Improving the integration with IBM Server for MetaMask for correlation rules would be beneficial. Currently, I use Sentinel in Azure, and I would prefer creating one rule to roll it out to both Sentinel and QRadar. However, this is not possible because QRadar lacks this capability."
"There could be improvements made to the UI, the user interface. Though the newer version, 7.3.2, might already have this improvement in place."
"They keep on adding products based on a simple feature set that they can do real well, but they can't integrate them into the rest of the security economy."
"Reporting should be very good, and a proper integration with cloud, not only the IBM cloud, but with other clouds also."
"The dashboard is pathetic and it takes a long time to perform a search."
"The usability of interfaces could be improved."
"Security Onion's user interface could be improved."
"The product is not easy to learn."
"The initial setup of the solution is a little bit difficult."
"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."
 

Pricing and Cost Advice

"The pricing is higher but cheaper than others and there are no additional costs."
"The price of this solution is a little high."
"The pricing needs to be such that they are more competitive with other vendors."
"The tool's on-premise version is expensive. However, it is cheaper than Splunk. The hybrid model offers shared instances for customers, which is not expensive. Customers with a limited budget can opt for it. You can get premium support with licenses. However, if you need customized integration, you need to buy it."
"Pricing is good."
"As for licensing costs, I haven't seen the exact figures, but it is considered somewhat costly. On a scale from one to ten, where one is very expensive and ten is very cheap, I would rate it a six—it’s costly but worth the money."
"In terms of additional costs, it depends on the subscription that you choose. There are plenty of options to choose from."
"The solution's pricing is based on the EPS model."
"It is an open-source solution."
"Security Onion is a free 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
Jun 28, 2015
Qradar vs. ArcSight
Continuing with the SIEM posts we have done at Infosecnirvana, this post is a Head to head comparison of the two Industry leading SIEM products in the market – HP ArcSight and IBM QRadar Both the products have consistently been in the Gartner Leaders Quadrant. Both HP and IBM took over niche SIEM…
 

Top Industries

By visitors reading reviews
Outsourcing Company
12%
Financial Services Firm
10%
Construction Company
9%
Manufacturing Company
8%
Comms Service Provider
12%
University
12%
Government
9%
Construction Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business93
Midsize Enterprise39
Large Enterprise107
No data available
 

Questions from the Community

What are the biggest differences between Securonix UEBA, Exabeam, and IBM QRadar?
It mostly depends on your use-cases and environment. Exabeam and Securonix have a stronger UEBA feature set, friendlier GUI and are not licensed based on capacity (amount of logs and information in...
What SOC product do you recommend?
For tools I’d recommend: -SIEM- LogRhythm -SOAR- Palo Alto XSOAR Doing commercial w/o both (or at least an XDR) is asking to miss details that are critical, and ending up a statistic. Also, rememb...
What is your experience regarding pricing and costs for IBM Security QRadar?
I am overall satisfied with the licensing cost for IBM Security QRadar.
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

IBM QRadar, QRadar SIEM, QRadar UBA, QRadar on Cloud, IBM QRadar Advisor with Watson
No data available
 

Overview

 

Sample Customers

Clients across multiple industries, such as energy, financial, retail, healthcare, government, communications, and education use QRadar.
Information Not Available
Find out what your peers are saying about IBM Security QRadar vs. Security Onion and other solutions. Updated: September 2026.
915,341 professionals have used our research since 2012.