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AlienVault OSSIM vs LogRhythm SIEM comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 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

AlienVault OSSIM
Ranking in Security Information and Event Management (SIEM)
27th
Average Rating
7.4
Reviews Sentiment
7.1
Number of Reviews
31
Ranking in other categories
No ranking in other categories
LogRhythm SIEM
Ranking in Security Information and Event Management (SIEM)
14th
Average Rating
8.2
Reviews Sentiment
6.4
Number of Reviews
176
Ranking in other categories
Log Management (14th)
 

Mindshare comparison

As of August 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.1%, down from 3.1% compared to the previous year. The mindshare of LogRhythm SIEM is 2.6%, down from 3.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
LogRhythm SIEM2.6%
AlienVault OSSIM1.1%
Other96.3%
Security Information and Event Management (SIEM)
 

Featured Reviews

BP
Independent Contractor at a comms service provider with 5,001-10,000 employees
Enables cost-effective security management for small businesses
Scaling for USM is always challenging for any product unless it is purpose-built or overbuilt at the front end. They will use Palo Alto and its competitors, and LevelBlue will manage that implementation. The main area where the AlienVault product was lacking around the 2018 timeframe was in its ability to scale. By pushing it to a cloud-based system, they've largely alleviated scale issues. It's native in Amazon but will also run in Azure. They have worked with cloud service providers to offer enough throughput at a cost reasonable for a corporation. Scaling was their biggest problem, and they've largely conquered those issues.
SumitKumar20 - PeerSpot reviewer
Security Engineer at Granicus Inc.
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.

Quotes from Members

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

Pros

"The solution is free to use."
"The solution has a very good open source community, and whenever we have problems, we are always able to resolve it online."
"Network traffic analysis is highly efficient."
"The initial setup is straightforward."
"This solution is very stable; it runs on a Linux box, you only interface with it through the GUI, it works behind the scenes, and it has never crashed in the time that I have used it."
"The dashboard is the solution's most valuable aspect; it brings everything into one central point where I can actually look at it and go, "Okay, I understand what's going on," and the solution works well and allows me to have visibility into anomalous events."
"The most valuable feature is the logging capability."
"With AlienVault you get everything in one box."
"As a security organization, our challenges are discovering where our data is at, most times, and protecting it, and just having everything in a single space has been very helpful."
"Overall, versus competitors, it is a lot easier to use, a lot more user friendly, but it still gives you a lot of flexibility to do whatever you want."
"The major feature of this solution is its easy configuration which helps different team members to work on it effectively. This kind of feature is not available in other solutions because of a request for specialised schemes for configuration report extraction and searching. Another feature that I really admire is the significant improvement in the compliance in the auditing process by the solution. Our organisation-specific complaints require where the mailbox data needs to be forwarded, stored and searchable for a certain time period. This solution categorises data based on different types, which include cold, warm and hot data. These features allow faster and easier extraction of any data even if the event was occurring several years ago. I also like other features, especially user behaviour analysis and automation. If suddenly someone accesses your side or an unusual traffic is recorded from a user the solution flags it very effectively."
"In comparison to others, LogRhythm SIEM has certain features that other solutions are lacking; for example, user analytics and user behavior monitoring are features that some of the other SIEMs lack."
"The dashboards and the AI Engine."
"LogRhythm allows our IT/IS teams to quickly identify issues across the enterprise."
"This solution has improved our organization in many different ways. The biggest benefit is being able to view all information in one dashboard instead of having to look at several different applications and dashboards. I can see information across our entire environment and every aspect of our network."
"The most valuable part of the solution is being to view all of the logs whenever you want."
 

Cons

"The correlation engine needs to be improved."
"The initial setup was not so easy, partly because the documentation was not up to date."
"The incidence reporting could be better."
"It's under heavy traffic. If you have heavy traffic, the system is slow."
"The user interface could be improved."
"ArcSight works better than AlienVault right now."
"AlienVault OSSIM’s configuration and integration could be a little easier."
"Sometimes it takes very long for your issue to get resolved."
"More seminars. Reporting: A reporting tool would be good for us, especially if we have better knowledge of them."
"There are other security technologies outside of this SIEM that should be inside of this SIEM. I can see in their roadmap that they're trying to address a lot of these things, and have these technologies built into the solution, because there is no point in going to another vendor or opening up a second window to obtain the data that you need."
"We use Windows Event Forwarding to collect the logs from our Windows clients, and the logs get aggregated as one data source on that collector. Therefore, finding logs specific to one particular Windows system requires some creativity in how we search the SIEM."
"When you get LogRhythm out-of-the-box, there are so many knobs to turn and so many things to configure and set up, that it's almost impossible to do it on your own, as an enterprise senior engineer."
"There is, of course, always, improved automation. Because, as we are continually needing more and more people from an analyst perspective, the more we can automate, the fewer people we need."
"The log source support is good, there's always room for improvement. One of the areas that LogRhythm's kind of pushing really hard right now is to integrate more cloud solutions, so your Office 365, your Azure, your AWS, making sure that those SaaS and other cloud platforms are getting the data you need into that platform."
"I would really like to see some type of group or global management for RIM policies,"
"It seems with all of the advanced features that we haven't quite figured them out. It is very complex."
 

Pricing and Cost Advice

"AlienVault OSSIM is an open-source solution."
"When comparing AlienVault OSSIM to Microsoft Sentinel, AlienVault OSSIM incurs additional costs due to its licensing price structure. If you are using AlienVault for security purposes at a certain level it can have a higher price point than the current pricing of Microsoft Sentinel."
"I used the paid version of the tool and found it to be expensive. It has been a while since I changed to Securonix. I will have to check whether AlienVault charges per device, user, or log."
"We are using a free version of the solution. If you purchase a license there are more features available but the price is a little high. The solution should be cheaper to allow more customers to be able to afford it."
"OSSIM is free."
"The solution is open source, so it's free to use."
"The price of AlienVault OSSIM is too high sometimes for us to present to our customers. The price should be lower. We are on a three-year license to use the solution. We had to pay extra for the support."
"AlienVault OSSIM is free."
"I would rate the pricing 4 out of 5. There are no additional costs to the standard licensing fees."
"It costs a great amount, but its pricing is competitive with some of the other vendors. For licensing and support, we pay about 20,000. There are no additional costs or anything like that."
"We did a five-year agreement. We pay close to a quarter of a million dollars for our solution."
"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."
"On a scale of one to ten, where one is low, and ten is high, I rate the pricing between six and seven."
"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."
"If you don't have your staff, absolutely look into the co-pilot and factor that into your cost evaluation."
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Top Industries

By visitors reading reviews
Comms Service Provider
14%
Financial Services Firm
8%
University
7%
Computer Software Company
7%
Construction Company
13%
Financial Services Firm
9%
Outsourcing Company
8%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business18
Midsize Enterprise9
Large Enterprise8
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise39
Large Enterprise83
 

Questions from the Community

What is your experience regarding pricing and costs for AlienVault OSSIM?
It depends. I would need to review their cost models, but generally, they are on a scaled basis based on throughput usage. Because it's a software as a service solution for their core product for U...
What needs improvement with AlienVault OSSIM?
Scaling for USM is always challenging for any product unless it is purpose-built or overbuilt at the front end. They will use Palo Alto and its competitors, and LevelBlue will manage that implement...
What is your primary use case for AlienVault OSSIM?
This solution is very similar to most of the other MSSPs that you would find out there. When I look at use cases, AlienVault was initially aimed at small to medium businesses. It grew, and that was...
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?
LogRhythm SIEM could learn from Wazuh, as Wazuh has a built-in mechanism that allows you to write custom scripting and scripts through languages that Wazuh can then trigger, which is somewhat bette...
What is your experience regarding pricing and costs for LogRhythm SIEM?
I find LogRhythm SIEM affordable, as it is a bit less costly than QRadar, although I have not been involved in negotiation charges; however, from the manager's approval, I see it as affordable.
 

Also Known As

OSSIM
LogRhythm NextGen SIEM, LogRhythm, LogRhythm Threat Lifecycle Management, LogRhythm TLM
 

Overview

 

Sample Customers

Council Rock School District
Macy's, NASA, Fujitsu, US Air Force, EY, Abbott, HD Supply, SAB Miller, UCLA, Raytheon, Amtrak, Cargill
Find out what your peers are saying about AlienVault OSSIM vs. LogRhythm SIEM and other solutions. Updated: June 2026.
908,834 professionals have used our research since 2012.