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AlienVault OSSIM vs Graylog Security comparison

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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)
25th
Average Rating
7.4
Reviews Sentiment
7.1
Number of Reviews
31
Ranking in other categories
No ranking in other categories
Graylog Security
Ranking in Security Information and Event Management (SIEM)
59th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.2%, down from 3.1% compared to the previous year. The mindshare of Graylog Security is 0.6%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
AlienVault OSSIM1.2%
Graylog Security0.6%
Other98.2%
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.
Tony Zafiropoulos - PeerSpot reviewer
Owner/ Chief Engineer at Fixvirus.com
Aggregates logs in one place and helps to review data points
We tried Graylog Security, starting with their inexpensive open-source version. We tested it out and continued using it for a while. As for the main differences between Graylog Security and other vendors, some users might prefer cloud-based platforms over on-premises solutions. It isn't inherently cloud-native, but that might not matter much for some.

Quotes from Members

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

Pros

"Technical support is excellent; they are very helpful and responsive."
"I have worked with LogRhythm in the past, since 2015, and I find that AlienVault is a better product."
"It has helped us remediate threats in the past by providing significant events that assisted in identifying suspicious activities, such as logins from multiple countries."
"Its user-friendliness is the most valuable. It is very easy to use and explore. The dashboard is very well packaged and integrated. You don't have to spend a lot of time in configuring it and checking out the RPM etc. It is also free and very powerful."
"The most valuable features of this solution are the data correlation and vulnerability assessment."
"There are a lot of people you will find using OSSIM since they are also offering OTX as a service"
"I recommend it due to the experience of the people running it."
"Network traffic analysis is highly efficient."
"We use the solution to collect logs."
"The tool aggregates logs. We can see the logs in one place."
 

Cons

"The log collection is okay, but tracing the logs or tracing the events is a bit difficult."
"There needs to be more support or some kind of training program so users can self-learn the system more effectively."
"There are somewhat more false positives with the user behavior analytics, which could benefit from an additional machine learning model to detect user patterns more rapidly."
"AlienVault OSSIM on-premise version is more difficult to implement than the cloud version. Additionally, they should add integration between several different environments at once and improve their online knowledge base."
"The user interface needs to be friendlier across the board."
"Lacking in depth of reporting."
"The initial setup was a bit complex. You've got to do a lot of reading. It's not an intuitive implementation."
"AlienVault OSSIM’s configuration and integration could be a little easier."
"Graylog Security needs to incorporate security scorecards."
 

Pricing and Cost Advice

"The solution is open source, so it's free to use."
"OSSIM is open source, and USM is the paid license. So, if you want, you can switch to USM. There you will have to buy a license, and they have a support team that helps you out on issues you face."
"AlienVault OSSIM is an open-source solution."
"AlienVault pricing is the best. Whatever cost you are paying, you are getting a return on every penny... It's not like your IBM, your QRadar, or Splunk, where the cost is too high."
"AlienVault OSSIM is free."
"The tool's licensing costs are yearly."
"AlienVault OSSIM is expensive compared to its competitors."
"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."
"I rate the tool's pricing a one out of ten."
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Top Industries

By visitors reading reviews
Comms Service Provider
14%
Financial Services Firm
7%
Manufacturing Company
7%
University
7%
Educational Organization
13%
Comms Service Provider
9%
Retailer
8%
Outsourcing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business18
Midsize Enterprise9
Large Enterprise8
No data available
 

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...
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Also Known As

OSSIM
No data available
 

Overview

 

Sample Customers

Council Rock School District
Information Not Available
Find out what your peers are saying about AlienVault OSSIM vs. Graylog Security and other solutions. Updated: September 2026.
913,806 professionals have used our research since 2012.