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AlienVault OSSIM vs Trellix ESM 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)
24th
Average Rating
7.4
Reviews Sentiment
7.1
Number of Reviews
31
Ranking in other categories
No ranking in other categories
Trellix ESM
Ranking in Security Information and Event Management (SIEM)
21st
Average Rating
7.4
Reviews Sentiment
7.0
Number of Reviews
38
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of November 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.2%, down from 2.6% compared to the previous year. The mindshare of Trellix ESM is 1.1%, down from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Trellix ESM1.1%
AlienVault OSSIM1.2%
Other97.7%
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.
MD
SVP IT at AS IT Consulting Pvt. Ltd.
Offers comprehensive report generation while maintaining ease of integration
We need to improve Trellix ESM by making sure that most of the logging devices available in the global market should be covered, and if there is any device which is not covered, there should not be any additional charges for writing the custom parsers on that. We can add some new features regarding AI in the future for Trellix ESM, but the maturity will take a longer time. There are many false positives that happen in an environment during the first couple of months, or around six months, so the system analyst is not able to identify whether the event which has occurred is a true positive or a false positive.

Quotes from Members

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

Pros

"Network traffic analysis is highly efficient."
"You can customize the dashboards as well as the reporting."
"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 solution has a very good open source community, and whenever we have problems, we are always able to resolve it online."
"The initial setup is straightforward."
"Inbuilt IDS, inbuilt integration with threat intelligence platform and with vulnerability assessment modules."
"The open vault component and the checking of vulnerabilities are the most valuable features, and the page management helps with this, because if you know how your device is vulnerable at least you can do something about it."
"Technical support is excellent; they are very helpful and responsive."
"It is easy to use and deploy. It comes with user-friendly manuals."
"VirusScan Enterprise provides protection against real-time malware attacks."
"The most valuable feature is that if the scanning does find something, it quarantines it. Then you can decide what you are going to do with it."
"The most valuable feature is for the security operation center because it provides visibility of all traffic within the company infrastructure."
"It is a good central viewpoint for issues, which can then be investigated in more detail on the subnet servers and endpoints."
"The product is worth the price."
"The solution's technical support is great."
"We now have a better view of our security posture from an external and internal point of view."
 

Cons

"The incidence reporting could be better."
"There needs to be more support or some kind of training program so users can self-learn the system more effectively."
"It's under heavy traffic. If you have heavy traffic, the system is slow."
"The documentation could be improved."
"When comparing AlienVault OSSIM to other solutions it looks a bit outdated. Additionally, they need to improve their integration."
"We need more dashboards and we need more customization for dashboards."
"There needs to be more focus on the NOC and IIS in terms of developing applications for behavior detection."
"The correlation engine needs to be improved."
"There should be support for multitenancy in the product."
"We would welcome integrations with some of the new McAfee acquisitions, e.g., behavioural analytics."
"McAfee has many issues with integration. I am looking for an end-to-end integration such as EDR, and Next-Generation SOC 2.0."
"There's no software support from McAfee."
"McAfee will fall back a little in this scenario because the cloud integrations aren't extensively available."
"The product documentation is good, but could be better. Also a bug-free version would be nice as the version I worked on had a bug in the alarm system."
"McAfee is no more providing security updates on this product, and the enhancements to this product seem to have stopped."
"Product currently requires Flash."
 

Pricing and Cost Advice

"AlienVault OSSIM is expensive compared to its competitors."
"OSSIM is free."
"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 solution is open source, so it's free to use."
"The tool's licensing costs are yearly."
"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."
"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 cost is dependent on the customer's environment and requirements."
"You should buy the distributed option instead of the all-in-one for environments with more than 1000 end points."
"We renew our license annually."
"When compared to IBM Security QRadar and other similar platforms, the pricing of McAfee ESM is reasonable and comparatively less expensive."
"The licensing cost is based on EPS."
"The price of McAfee ESM is higher than some of the other solutions. There are additional features that can be added at an additional fee."
"The pricing is fair."
"McAfee is the right choice for a low-budget solution."
report
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Comparison Review

VS
Manager, Enterprise Risk Consulting at a tech company with 1,001-5,000 employees
Feb 26, 2015
HP ArcSight vs. IBM QRadar vs. ​McAfee Nitro vs. Splunk vs. RSA Security vs. LogRhythm
We at Infosecnirvana.com have done several posts on SIEM. After the Dummies Guide on SIEM, we are following it up with a SIEM Product Comparison – 101 deck. So, here it is for your viewing pleasure. Let me know what you think by posting your comments below. The key products compared here are…
 

Top Industries

By visitors reading reviews
Comms Service Provider
15%
Manufacturing Company
9%
Financial Services Firm
8%
University
8%
Construction Company
13%
Manufacturing Company
11%
Financial Services Firm
11%
Comms Service Provider
10%
 

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 Business15
Midsize Enterprise6
Large Enterprise25
 

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 McAfee ESM?
When discussing Trellix ESM pricing and licensing, if you consider some premium product, the pricing also has to be premium, however, enterprise customers who look for a premium product, alongside ...
What needs improvement with McAfee ESM?
Areas of Trellix ESM that could be improved or enhanced include checking on the clients who are still on-prem, especially banks, as most are not moving everything to the cloud due to confidentialit...
What is your primary use case for McAfee ESM?
My customer's usual use case for Trellix ESM involves one client, as most of the users have moved to ESM. Nowadays, they don't use IPS only, since McAfee IPS is standalone; they incorporate firewal...
 

Also Known As

OSSIM
McAfee ESM, NitroSecurity, McAfee Enterprise Security Manager
 

Overview

 

Sample Customers

Council Rock School District
San Francisco Police Credit Union, Wªstenrot Gruppe, Volusion, California Department of Corrections & Rehabilitation, Government of New Brunswick, State of Colorado, Macquarie Telecom, Texas Tech University Health Sciences Center, Cologne Bonn Airport
Find out what your peers are saying about AlienVault OSSIM vs. Trellix ESM and other solutions. Updated: September 2026.
920,769 professionals have used our research since 2012.