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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) (9th)
Security Onion
Ranking in Log Management
20th
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 January 2026, in the Log Management category, the mindshare of LogRhythm SIEM is 2.4%, up from 2.3% compared to the previous year. The mindshare of Security Onion is 3.7%, down from 5.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Log Management Market Share Distribution
ProductMarket Share (%)
LogRhythm SIEM2.4%
Security Onion3.7%
Other93.9%
Log Management
 

Featured Reviews

SV
Cyber Security Engineer at Diyar United Company
Provides strong detection capabilities but requires improvements in parsing and stability
I cannot think of any specific features that LogRhythm SIEM can improve upon since it supports a wide variety of major vendors. However, they need to improve their parsing techniques; the tool should understand various devices and present data in a human-readable format. For example, if a personal Android mobile needs to be integrated, LogRhythm SIEM should be able to parse that data effectively. They also need to improve their database of supported devices to cover smaller vendors alongside the major players, allowing for better global reach and usability. I have noticed some problems with parsing errors, event mismatches, and data mismatching, so ensuring accurate parsing and continuous improvement according to device updates are my basic expectations as a detection engineer.
Anish Bajracharya - PeerSpot reviewer
Postgraduate at a educational organization with 1,001-5,000 employees
Provides good threat hunting by finding infected ports, but its initial setup is difficult
The most valuable feature of Security Onion for security monitoring is its ability to find infected ports. I have used the Squert tool within Security Onion the most for threat hunting The initial setup of the solution is a little bit difficult. I have been using Security Onion for one year.…

Quotes from Members

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

Pros

"LogRhythm SIEM has some valuable features, including its ability to maintain backups of events and manage alerts separately through an engine that handles content and administration tasks."
"File Integrity Monitoring is really valuable because we have it set up on our core assets. This is one of the key features that I utilize. We also use it quite a lot for event management to do reporting."
"The initial setup process is very user-friendly."
"The artificial intelligence engine."
"It gives us insight into our entire installation, where we are multiple sites, going as far as the East Coast to the Central West Coast."
"The daily alerts allow me to quickly find security and operations issues which need to be addressed."
"When it comes to dealing with support, all my interactions have been great. Everyone has known what they're doing and have been quick to respond. They seem to always know the answer. I haven't stumped anybody yet."
"I see LogRhythm SIEM as value for money; I would rate it eight out of ten."
"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."
 

Cons

"The responses provided by the cloud team are inefficient."
"I face stability issues every quarter that necessitate corrective maintenance."
"I would probably look for more things to go into the web console that is currently on the fat client."
"The log storage capacity should be increased."
"In terms of blind spots, we are looking for more improvements since we don't have visibility over everything."
"The initial setup is not so easy because it is quite a process."
"We've had issues with scaling and local support."
"The web and on-premise console interface should be the same instead of having a separate engine for each."
"The initial setup of the solution is a little bit difficult."
"The product is not easy to learn."
"Security Onion's user interface could be improved."
 

Pricing and Cost Advice

"Look for whatever will give you the most value. That's the main point. It is not one size fits all."
"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."
"When it comes time to renew, they say, "This is what you are using. This is what we can do for you." So, they work with you on pricing."
"The support which allows more customized to the environment when we are deploying new systems is called Professional Service and is very expensive. The technical annual support and there is an annual fee."
"On a scale of one to ten, I'd rate the pricing of this solution as a seven - not too expensive but not cheap either. Regarding licensing costs, it varies depending on factors like being a partner or an end user, but there are no additional costs aside from standard licensing fees for the basic SIEM solution."
"I would recommend talking to the rep. That's the biggest thing because they will know what questions to ask."
"We work with French-speaking African countries, and it costs more than the average SIEM solution. Also, the pricing isn't too flexible. AlienVault, Splunk, and IBM QRadar are more suitable for customers on a tight budget."
"I give the price a six out of ten."
"It is an open-source solution."
"Security Onion is a free solution."
"Security Onion is an open-source solution."
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Government
9%
Manufacturing Company
8%
Financial Services Firm
7%
University
12%
Government
11%
Comms Service Provider
10%
Computer Software Company
9%
 

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: December 2025.
881,082 professionals have used our research since 2012.