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LogRhythm SIEM vs Security Onion comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 9, 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

LogRhythm SIEM
Ranking in Log Management
13th
Average Rating
8.4
Reviews Sentiment
6.4
Number of Reviews
175
Ranking in other categories
Security Information and Event Management (SIEM) (8th)
Security Onion
Ranking in Log Management
19th
Average Rating
7.6
Reviews Sentiment
5.5
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2025, in the Log Management category, the mindshare of LogRhythm SIEM is 2.3%, down from 2.6% compared to the previous year. The mindshare of Security Onion is 4.5%, down from 5.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Log Management Market Share Distribution
ProductMarket Share (%)
LogRhythm SIEM2.3%
Security Onion4.5%
Other93.2%
Log Management
 

Featured Reviews

SumitKumar20 - PeerSpot reviewer
Tool consistently aids in effective threat detection and monitoring but could benefit from improved log source management and resource optimization
One major area for improvement in LogRhythm SIEM is the lack of volume measurement capability in terms of storage. There is currently no way to determine how much data is being consumed in terms of gigabytes, terabytes, or petabytes from particular devices or environments. This information is crucial for planning future storage needs and scalability. The system monitor (collector) agent has issues with resource consumption. Even when not actively collecting data, the agent continues to consume significant CPU and memory resources, which can be particularly problematic for small business environments with limited resources. LogRhythm SIEM could improve by adding more default device support. While they have good default settings for devices such as Palo Alto firewalls, custom log sources often require extensive work. Increasing the number of supported devices with built-in policies and functionality would reduce the need for custom work. Competitive SIEM tools often provide more comprehensive coverage for various devices and vendors.
Jörg Kippe - PeerSpot reviewer
A mature and affordable solution that is easy to install and easy to update
The product takes time to learn, it's not that easy. In the beginning we had a lot of questions. If you want to use such a tool in an real (industrial) environment, you have to ask how to get the network data. Can we do a full packet capture? Can we provide agents to our end systems? There are no simple solutions to these questions. It's a general problem when running such systems in an industrial environment.

Quotes from Members

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

Pros

"The dashboards in the LogRhythm SIEM really help us as a starting point. It gives us a starting point we can go to every day. We walk through several dashboards to see anomalous activity for further investigation."
"It has allowed us to dive deeper into our network and figure out what is going on by parsing logs properly and being able to reduce the time it takes to work cases down from seven days to approximately two days."
"NextGen SIEM's most valuable feature is its user-friendliness."
"Our clients enjoy having one dashboard to monitor their environments in real time."
"LogRhythm does a very good job of helping SOCs manage their workflows."
"NextGen SIEM's best feature is how it presents logs."
"I like LogRhythm's ease of use. The solution has improved compared to previous versions. It had many issues before, like integration, the console, creating reports, false positives, etc. The AI engine has made it stronger in the latest version."
"The initial setup is pretty easy."
"The most valuable feature of Security Onion for security monitoring is its ability to find infected ports."
"We use Security Onion for internal vulnerability assessment."
"Security Onion is the most mature solution in the market."
 

Cons

"The SOAR capabilities need improvements as they currently require programming knowledge."
"The log storage capacity should be increased."
"I think they probably need to, because a lot of companies are having this cloud-first strategy, where anything that's new has to go into the cloud for some reason."
"I have probably submitted half a dozen log parser requests, and I keep finding more stuff that we need to keep an eye on that doesn't have a definition in LogRhythm."
"The main problem I have with LogRhythm SIEM is its stability; the solution is not stable."
"I would really like to see some type of group or global management for RIM policies,"
"My biggest issue - I know that they say they're doing it - is that the API-building is extremely important. They keep saying it's coming, it's coming. It's not coming fast enough. I don't care if they need to double their team size to get it out there quicker, the world is already in the cloud and we can't monitor it. That's a big problem for us. My boss keeps coming to me about it. That's an issue."
"The console installation is an area with a shortcoming in the solution that needs improvement. If LogRhythm SIEM can offer a web console, it would be great."
"Security Onion's user interface could be improved."
"The initial setup of the solution is a little bit difficult."
"The product is not easy to learn."
 

Pricing and Cost Advice

"It is a very cost-effective solution."
"If you don't have your staff, absolutely look into the co-pilot and factor that into your cost evaluation."
"We have seen a measurable decrease in the mean time to detect and respond to threats. As it comes out new features and new releases, the window is becoming a lot narrower because you can pivot a lot more with the data. Therefore, the new features and enhancements are reducing that."
"We did a five-year agreement. We pay close to a quarter of a million dollars for our solution."
"The product is inexpensive than other tools."
"The setup and licensing for small and medium size businesses is straightforward, though when it comes to the enterprise it pays to keep in mind the possibility for complications given all the extras and add-ons that may be required."
"I would recommend that whatever sales quotes to them upfront, they will probably go up. Because they are probably going to outgrow that very quickly or once they start getting everything into it, they are going to have to move up anyway."
"The nice thing about LogRhythm is you can either use the agents, getting a certain number of agents with your license depending on how you want to go, and those agents do a lot of cool things, or you can use CIS Log host, then you have like an unlimited number of them."
"Security Onion is a free solution."
"It is an open-source solution."
"Security Onion is an open-source solution."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Government
10%
Manufacturing Company
7%
Financial Services Firm
7%
University
11%
Computer Software Company
11%
Comms Service Provider
11%
Government
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise38
Large Enterprise83
No data available
 

Questions from the Community

What is the difference between log management and SIEM?
Rony, Daniel's answer is right on the money. There are many solutions for each in the market, a lot depends upon your ability to manage such tools and your budget. A small operation may be best s...
What needs improvement with LogRhythm NextGen SIEM?
One major area for improvement in LogRhythm SIEM is the lack of volume measurement capability in terms of storage. There is currently no way to determine how much data is being consumed in terms of...
What do you like most about LogRhythm SIEM?
I find LogRhythm's log management capabilities to be beneficial.
What do you like most about Security Onion?
The most valuable feature of Security Onion for security monitoring is its ability to find infected ports.
What is your experience regarding pricing and costs for Security Onion?
Security Onion is an open-source solution. On a scale from one to ten, where ten is expensive and one is cheap, I rate the solution's pricing a six out of ten.
What needs improvement with Security Onion?
The initial setup of the solution is a little bit difficult.
 

Also Known As

LogRhythm NextGen SIEM, LogRhythm, LogRhythm Threat Lifecycle Management, LogRhythm TLM
No data available
 

Overview

 

Sample Customers

Macy's, NASA, Fujitsu, US Air Force, EY, Abbott, HD Supply, SAB Miller, UCLA, Raytheon, Amtrak, Cargill
Information Not Available
Find out what your peers are saying about LogRhythm SIEM vs. Security Onion and other solutions. Updated: September 2025.
868,759 professionals have used our research since 2012.