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AlienVault OSSIM vs SentinelOne Singularity AI SIEM comparison

 

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)
27th
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)
8th
Average Rating
8.6
Reviews Sentiment
6.4
Number of Reviews
15
Ranking in other categories
AI Observability (6th)
 

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 SentinelOne Singularity AI SIEM is 1.3%, 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 (%)
SentinelOne Singularity AI SIEM1.3%
AlienVault OSSIM1.1%
Other97.6%
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

"You can customize the dashboards as well as the reporting."
"It is a perfectly nice and free tool for compliance testing, assessment, and some basic vulnerability."
"Better than other SIEM solutions because almost everything can be integrated."
"The paid version of the solution has reporting and better scalability options."
"OSSIM is the only solution that includes the large number of modules that we need: a vulnerability scanner, a network IDS system, a host IDS system."
"The initial setup was straightforward. I didn't have any problems."
"The most valuable features of AlienVault OSSIM are case management, ease of configuration, and investigation."
"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."
"The AI features of SentinelOne Singularity AI SIEM are absolutely perfect."
"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%."
"I will strongly recommend this, because after SentinelOne Singularity AI SIEM we have reduced our engineering time to a certain degree as it has helped us to do investigations fast, we get actual alerts that matter and can prioritize them properly, and the monitoring capability is now completely in one single platform so we do not have to go here and there, which has given us good ROI in total."
"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."
"I assess the overall security posture of our organization after implementing SentinelOne Singularity AI SIEM as significantly improved."
"SentinelOne Singularity AI SIEM has improved our overall security posture and is reducing the workload on the SOC team."
"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."
"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."
 

Cons

"GUI could be improved."
"AlienVault OSSIM should improve the deployment and make it unified like the USM."
"The solution needs more integration with cyber intelligence systems. Our customers want to use a single tool for managing cybersecurity."
"Lacking in depth of reporting."
"I would like the solution to be able to integrate with my firewall, my IDS and my Honeypot solutions so that it can provide real-time reporting as things occur and then have alert sent to me on my phone when suspicious activity is happening."
"The incidence reporting could be better."
"Sometimes it takes very long for your issue to get resolved."
"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."
"In AI SIEM, the areas that have room for improvement are the parsers for third-party integrated data or for third-party data sources that are not native integrations, which could be made a bit easier."
"What I dislike is that the dashboard is very old, so they do not have much capability to be honest."
"Unfortunately, I was not happy with SentinelOne Singularity AI SIEM because it is not mature yet."
"The AI-generated investigations can occasionally require manual validation for complex incidents."
"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."
"I would want the false positive ratio to be lower and would want to improve that aspect so the true will be more, and the false will be lesser."
"Another area for improvement is that the product is somewhat expensive. Pricing could be improved as well."
"It is quite good, but the only downside is that it is costly."
 

Pricing and Cost Advice

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

By visitors reading reviews
Comms Service Provider
14%
Financial Services Firm
8%
University
7%
Construction Company
7%
Outsourcing Company
22%
Construction Company
7%
Manufacturing Company
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 Enterprise5
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?
They could expand more integrations for other third-party products that are not currently available. Those are areas they can improve or have yet to improve. For example, we have firewall integrati...
What is your primary use case for SentinelOne Singularity AI SIEM?
Clients can use SentinelOne Singularity AI SIEM for endpoint security solutions, and apart from that, we currently have something called prompt security where it is helping us to enhance control ov...
What advice do you have for others considering SentinelOne Singularity AI SIEM?
The automated workflow feature impacts my security tasks and manual efforts significantly. Downtime is not necessarily required in scenarios where a particular system has to be isolated. Whether it...
 

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: August 2026.
909,948 professionals have used our research since 2012.