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AlienVault OSSIM vs Sentinel 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
Sentinel
Ranking in Security Information and Event Management (SIEM)
14th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
18
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.2%, down from 2.9% compared to the previous year. The mindshare of Sentinel is 2.7%, down from 4.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Sentinel2.7%
AlienVault OSSIM1.2%
Other96.1%
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.
PT
Senior Specialist at a tech vendor with 10,001+ employees
Improved incident monitoring has reduced false positives and supports audit-ready reporting
The best features Sentinel offers, in my experience, include the filtering features and the ability to run KQL queries so that I can understand what table has what and when the last log has been monitored and reported. Sentinel has positively impacted my organization by improving monitoring significantly. As a pay-as-you-go service, we are ingesting logs as needed. When the pay-as-you-go service is enabled, we can either ingest whenever there is a spike in the logs, and when there are fewer logs, we can reduce the ingestion. This approach is helpful for both the organization and me. In terms of metrics showing how Sentinel has helped, as part of log filtering, we have reduced around thirty to thirty-five percent of false-positive incident creation. We have also cleared some audits by enabling log retention in Sentinel, allowing us to pull out data for audits when necessary using both hot retention and cold retention. This has helped the organization as a whole.

Quotes from Members

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

Pros

"The threat alerts it gives me from time to time on harmful code within the network, or if they are generating any network traffic, are very useful."
"Better than other SIEM solutions because almost everything can be integrated."
"You can customize the dashboards as well as the reporting."
"Technical support is excellent; they are very helpful and responsive."
"The product is majorly used for threat detection of the agents on servers and endpoints."
"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 features of AlienVault OSSIM are case management, ease of configuration, and investigation."
"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."
"One of the most valuable features is the business intelligence engine. It's very important because it keeps track of everything that's happening and alerts us if something is different than expected. The first time I used it, I was shocked at how well it performed. Another valuable feature that I think makes this product worth the price you pay for it is that it connects to basically every system that provides some form of logging, and it's very easy to set up what triggers this."
"Sentinel gave us logs to tell us what's going right and wrong in your environment so we could secure the network."
"We can do advanced hunting queries and modify SQL queries to get desired results based on the rules triggering over the console."
"Novell SIEM was my second technology of this kind."
"Sentinel is a tool that, if it's well configured, removes from view all unnecessary information and shows you only needful entries, so you can do your job faster, more conveniently, and with high performance."
"Sentinel has positively impacted my organization by improving monitoring significantly."
"The solution's Kusto Query Language (KQL) execution time is pretty good."
"Transactional user information improves security, prevents fraud, and promotes best practices."
 

Cons

"AlienVault OSSIM gives unwanted notifications."
"Sometimes it takes very long for your issue to get resolved."
"AlienVault OSSIM could improve by having better integration with some of the newer tools."
"The price of this solution is very high and it could be cheaper."
"They can add more compliance templates."
"From a management console perspective and the maturity of the dashboards, I would probably put it slightly behind some of the other players that have been in the market for ages."
"ArcSight works better than AlienVault right now."
"When comparing AlienVault OSSIM to other solutions it looks a bit outdated. Additionally, they need to improve their integration."
"I rate Sentinel a six out of ten for scalability."
"Creating a drag-and-drop dashboard or workbook in Sentinel is a little more complex compared to other tools like LogRhythm and IBM QRadar."
"This product's connection to certain types of cloud systems could be improved."
"You need a lot of Unix scripting knowledge in order to manage the tool, which is one of the main issues that we faced."
"The web interface needs to be improved, as it has a java-based way to call its controls."
"It's probably not a product that I would recommend to anyone."
"There is a need for more flexibility in customization, especially when working with different vendors and platforms."
"The dashboard and customer view should be improved."
 

Pricing and Cost Advice

"The licensing fees for the non-community edition are paid on an annual basis, and there are no costs in addition to this."
"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."
"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."
"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."
"We are using the community version, which can be used for free."
"AlienVault OSSIM is an open-source solution."
"AlienVault OSSIM is expensive compared to its competitors."
"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."
"The solution’s pricing is aligned with its competitors."
"Sentinel's slightly on the expensive side."
"We inquired about getting support from the vendor, Micro Focus, but the cost was very high."
"Sentinel is moderately priced."
"Sentinel is a subscription-based solution."
"We receive a pricing discount because of our ongoing partnership with Micro Focus."
report
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Top Industries

By visitors reading reviews
Comms Service Provider
15%
Manufacturing Company
9%
Financial Services Firm
8%
University
7%
Outsourcing Company
11%
Financial Services Firm
10%
Manufacturing Company
9%
Comms Service Provider
8%
 

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 Business9
Midsize Enterprise3
Large Enterprise8
 

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 your experience regarding pricing and costs for NetIQ Sentinel?
My experience with pricing, setup cost, and licensing shows that while it is a little on the higher side, since it is part of a package for all Microsoft products, I feel it is a better choice comp...
What needs improvement with NetIQ Sentinel?
Sentinel needs minimal improvement, though improvements are ongoing. Everything seems to be functioning perfectly, and I don't have any specific inputs for improvements I would like to see in Senti...
What is your primary use case for NetIQ Sentinel?
My main use case for Sentinel is that I'm a subject matter expert for Sentinel, specifically for security incident event and event management. I head the SME for SIEM in LTIMindtree for this curren...
 

Also Known As

OSSIM
NetIQ Sentinel, Novell SIEM
 

Overview

 

Sample Customers

Council Rock School District
Faysal Bank, GaVI, Handelsbanken, ISC Mªnster, Lambeth Council, Swisscard, The Municipality of Siena, Tukes, University of Dayton, University of the Sunshine Coast
Find out what your peers are saying about AlienVault OSSIM vs. Sentinel and other solutions. Updated: September 2026.
918,169 professionals have used our research since 2012.