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AlienVault OSSIM vs SentinelOne Singularity AI SIEM comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 29, 2026

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
SentinelOne Singularity AI ...
Ranking in Security Information and Event Management (SIEM)
6th
Average Rating
8.6
Reviews Sentiment
6.3
Number of Reviews
16
Ranking in other categories
AI Observability (6th)
 

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 SentinelOne Singularity AI SIEM is 1.3%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
SentinelOne Singularity AI SIEM1.3%
AlienVault OSSIM1.2%
Other97.5%
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.
Dev Reshwal - PeerSpot reviewer
Technical Support Executive at Softcell Technologies Limited
Automation has reduced workload and real-time monitoring provides faster incident response
SentinelOne Singularity AI SIEM is the best, but sometimes the dashboards are a little simple compared to other tools. The custom dashboard is not available in their features. Therefore, I would suggest adding the custom dashboard for any of our requirements. The AI-driven analytics from SentinelOne Singularity AI SIEM has not affected our ability to reduce false positives. SentinelOne Singularity AI SIEM has affected my SOC's efficiency in investigating alerts and responding to incidents. If we receive any alerts, we can observe what activity is being done. We can see if it is malicious or something suspicious, or a true positive. We can analyze the path, the hash, and whether the signature is verified or not. We can see if it is an alert triggered by any engine. We can see the source of this. We will do that type of analysis and raise it to the client side. Also, if I identify anything suspicious or malicious in the alert, I will forcefully kill and quarantine it immediately.

Quotes from Members

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

Pros

"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 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."
"You can customize the dashboards as well as the reporting."
"What I like about this product, is that it is a fully-fledged solution."
"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 initial setup is straightforward."
"Inbuilt IDS, inbuilt integration with threat intelligence platform and with vulnerability assessment modules."
"The tool's security detection is good. It helps us with login tracking and generating reports. We aim to identify potential issues, such as brute-force attacks on user accounts or server-level anomalies. For instance, if I receive a report indicating a server is at an abnormal level, I investigate and address the issue."
"I assess the overall security posture of our organization after implementing SentinelOne Singularity AI SIEM as significantly improved."
"SentinelOne Singularity AI SIEM has impacted my organization positively because I am observing some improvement, including real-time monitoring and real-time threat detection that help secure both our and the client's organization from anything suspicious or any malicious types of alerts."
"With the help of this tool, the response time to sophisticated threats has improved significantly, and it recently cuts the MTTR time using Purple AI by 40%."
"The best features of SentinelOne Singularity AI SIEM include its user-friendly interface, ease of deployment, and ease of use, and it is also easy to control the devices, as we block USB on all machines, export the configuration of machines, and have very good visibility of the instance with excellent reports."
"AI-driven capabilities will give me real-time detection and will protect my autonomous AI interruption."
"When they face attacks such as ransomware and are dissatisfied with their existing solutions, they switch to SentinelOne Singularity AI SIEM, which is quite good in detecting unknown threats, cleaning the system, and handling ransomware."
"I have experienced no issues with SentinelOne Singularity AI SIEM; it is the best product I have ever used, very stable, handy, easy to manage, and excellent with its AI-driven capabilities."
"Overall, this affects my security posture positively because it improves it since it helps us in real-time monitoring, and it gives us automated investigation and also the auto-investigate tab, so it is pretty good."
 

Cons

"The main area where the AlienVault product was lacking around the 2018 timeframe was in its ability to scale."
"It's so hard to configure and explore something new on it. It is not easy to find the steps we need to follow in order to use the solution effectively."
"The price of this solution is very high and it could be cheaper."
"AlienVault OSSIM gives unwanted notifications."
"The solution is not scalable."
"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."
"The user interface could be improved."
"GUI could be improved."
"SentinelOne Singularity AI SIEM is the best, but sometimes the dashboards are a little simple compared to other tools."
"Unfortunately, I was not happy with SentinelOne Singularity AI SIEM because it is not mature yet."
"SentinelOne Singularity AI SIEM has some performance and reliability issues that need improvement."
"SentinelOne Singularity AI SIEM can improve in the area of XDR, especially in the integration between SentinelOne and other solutions and components in the network, as it was not working well with the Fortinet firewall."
"Customer support could be better because it is frequently transferred to various agents."
"At the moment, I feel the pricing is a little bit on the higher side, but the tool is positioned in a place where risk is very high, and we do not want to take chances, so we are prepared to pay the premium."
"It is quite good, but the only downside is that it is costly."
"There is room for improvement when it comes to the technical support quality and expertise of SentinelOne. Sometimes, the technical support team does not know how to resolve certain issues and takes time to respond, often requiring follow-up interactions within 24 hours."
 

Pricing and Cost Advice

"The solution is open source, so it's free to use."
"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."
"AlienVault OSSIM is free."
"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 an open-source solution."
"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."
"OSSIM is free."
"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."
Information not available
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Top Industries

By visitors reading reviews
Comms Service Provider
14%
Manufacturing Company
9%
Financial Services Firm
8%
University
8%
Outsourcing Company
23%
Manufacturing Company
7%
Comms Service Provider
6%
Media Company
6%
 

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 Business12
Midsize Enterprise6
Large Enterprise4
 

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 needs improvement with SentinelOne Singularity AI SIEM?
My impression of the AI-driven threat detection capabilities is that it helps a little bit, but they need to tune it a bit because we are seeing too many false positives recently. Since we are a pa...
What is your primary use case for SentinelOne Singularity AI SIEM?
SentinelOne Singularity AI SIEM is a tool that we use to support our clients. Our organization is a service-based organization, so we use SIEM to provide services to software-based clients. We are ...
What advice do you have for others considering SentinelOne Singularity AI SIEM?
In my organization, approximately eighty people work with SentinelOne Singularity AI SIEM. Our clients vary in size; we have small businesses, medium enterprises, and large enterprises as well. Sen...
 

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. SentinelOne Singularity AI SIEM and other solutions. Updated: September 2026.
915,341 professionals have used our research since 2012.