AlienVault OSSIM vs Trellix ESM comparison

AT&T and Trellix are both solutions in the Security Information and Event Management (SIEM) category. AT&T is ranked #12 with an average rating of 7.2, while Trellix is ranked #25 with an average rating of 8.5. AT&T holds a 1.9% mindshare in SIEM, compared to Trellix’s 1.2% mindshare. Additionally, 80% of AT&T users are willing to recommend the solution, compared to 76% of Trellix users who would recommend it.

AlienVault OSSIM

Read 31 AlienVault OSSIM reviews

4,311 Views
4,225 Comparison Views

80% willing to recommend

Trellix ESM

Read 38 Trellix ESM reviews

1,943 Views
1,768 Comparison Views

76% willing to recommend

AlienVault OSSIM

Trellix ESM

Comparison Buyer's Guide

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Executive SummaryUpdated on Sep 18, 2024

Trellix ESM and AlienVault OSSIM are popular security management solutions with distinct advantages. Users express a preference for the features and pricing of AlienVault OSSIM, while Trellix ESM is favored for its support and customer service.

Features: Trellix ESM is praised for its robust threat detection and response capabilities. Users highlight its advanced analytics and reporting functionalities. AlienVault OSSIM is appreciated for its ease of integration, comprehensive threat intelligence, and open-source flexibility.

Room for Improvement: Trellix ESM users suggest improvements for its complex configuration processes and call for more flexibility around its analytics capabilities. AlienVault OSSIM users seek enhancements in scalability and desire more frequent updates.

Ease of Deployment and Customer Service: Trellix ESM’s deployment is often described as challenging, demanding significant expertise, but its customer service is highly rated for being responsive and helpful. AlienVault OSSIM is noted for its relatively straightforward deployment process, thanks to being open-source, although its customer support is sometimes considered less responsive.

Pricing and ROI: Trellix ESM involves a higher initial setup cost but is considered to deliver a strong ROI over time. AlienVault OSSIM is noted for its lower setup costs and being cost-effective due to its open-source nature, which provides an attractive ROI quick-win.

To learn more, read our detailed AlienVault OSSIM vs. Trellix ESM Report (Updated: December 2025).

Buyer's Guide

AlienVault OSSIM vs. Trellix ESM

December 2025

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Helped 881,114 peers since 2012

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)

12th

Average Rating

7.4

Reviews Sentiment

7.1

Number of Reviews

Ranking in other categories

No ranking in other categories

Trellix ESM

Ranking in Security Information and Event Management (SIEM)

25th

Average Rating

7.4

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of January 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.9%, down from 4.3% compared to the previous year. The mindshare of Trellix ESM is 1.2%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Security Information and Event Management (SIEM) Market Share Distribution
Product	Market Share (%)
AlienVault OSSIM	1.9%
Trellix ESM	1.2%
Other	96.9%

Security Information and Event Management (SIEM)

Featured Reviews

Brandon Pearce

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.

Read full review

Mohit Dhingra

Senior Vice President 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.

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Quotes from Members

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

Pros

"Inbuilt IDS, inbuilt integration with threat intelligence platform and with vulnerability assessment modules."

"The solution has a very good open source community, and whenever we have problems, we are always able to resolve it online."

"Better than other SIEM solutions because almost everything can be integrated."

"Asset discovery is good."

"AlienVault OSSIM is an enterprise solution that sells easily. It is rated highly by organizations."

"The solution is very stable. Compared to Qradar and Splunk, it's very stable."

"There are a lot of people you will find using OSSIM since they are also offering OTX as a service"

"The product is easy to use."

More AlienVault OSSIM pros

"It is easy to use."

"It can be easily deployed with the other solutions."

"The support I have received from the vendor has been great."

"I like the ease of deployment."

"The ease of use is the most valuable feature. Over the years I have always been using this solution and have become comfortable with it."

"The solution's technical support is great."

"We are now able to completely monitor our environment so we can review what is there, which is a big win for us."

"The most valuable feature in ESM is its search and reporting feature. It's really nice."

More Trellix ESM pros

Cons

"The correlation engine needs to be improved."

"The initial setup was a bit complex. You've got to do a lot of reading. It's not an intuitive implementation."

"AlienVault OSSIM is costly."

"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."

"When comparing AlienVault OSSIM to other solutions it looks a bit outdated. Additionally, they need to improve their integration."

"The solution is not scalable."

"Lacking in depth of reporting."

"I don't like to work on OSSIM because it is unpredictable."

More AlienVault OSSIM cons

"There should be support for multitenancy in the product."

"There's no software support from McAfee."

"Product currently requires Flash."

"The product is mature and needs little improvement, but we could enhance the customized dashboarding based on use cases."

"McAfee is no more providing security updates on this product, and the enhancements to this product seem to have stopped. Moreover, we don't get proper support, and we struggle to get its support. It would be good if they can add some AI engine and out of the box use cases because it is currently limited to the same scenario and the same setup. I have done a POC for Securonix, LogRhythm. These products are much more ahead as compared to McAfee ESM. They have included multiple modules in the same solution. Correlation is very easy. If McAfee ESM can improve, especially in such implementations, then I believe it would be much better."

"I would like to see fingerprint recognition included in the next release of this solution."

"The user interface could be more user-friendly."

"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."

More Trellix ESM cons

Pricing and Cost Advice

"AlienVault OSSIM is free."

"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."

"AlienVault OSSIM is expensive compared to its competitors."

"The solution is open source, so it's free to use."

"The licensing fees for the non-community edition are paid on an annual basis, and there are no costs in addition to this."

"The tool's licensing costs are yearly."

"We are using the community version, which can be used for free."

More AlienVault OSSIM pricing and cost advice

"You should buy the distributed option instead of the all-in-one for environments with more than 1000 end points."

"It is an inexpensive product. We purchase its yearly license."

"We pay for our licensing fees on a yearly basis, and there are no costs in addition to the standard licensing fees."

"The licensing cost is based on EPS."

"When compared to IBM Security QRadar and other similar platforms, the pricing of McAfee ESM is reasonable and comparatively less expensive."

"The pricing is fair."

"McAfee is the right choice for a low-budget solution."

"The cost is all included. The finance department handles the financial part, and we mostly don't get involved in it."

More Trellix ESM pricing and cost advice

See which vendors are best for you

Use our free recommendation engine to learn which Security Information and Event Management (SIEM) solutions are best for your needs.

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Comparison Review

Vinod Shankar

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…

Read full review

Top Industries

By visitors reading reviews

Computer Software Company

13%

Comms Service Provider

11%

Financial Services Firm

Manufacturing Company

Comms Service Provider

16%

Financial Services Firm

Manufacturing Company

Computer Software Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	18
Midsize Enterprise	9
Large Enterprise	8

By reviewers
Company Size	Count
Small Business	15
Midsize Enterprise	6
Large Enterprise	24

Questions from the Community

What do you like most about AlienVault OSSIM?

Asset discovery is good.

See all answers

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...

See all answers

What needs improvement with AlienVault OSSIM?

See all answers

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 ...

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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...

See all answers

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...

See all answers

Comparisons

Wazuh vs AlienVault OSSIM

Compared 47% of the time

Venusense USM vs AlienVault OSSIM

Compared 9% of the time

USM Anywhere vs AlienVault OSSIM

Compared 7% of the time

Splunk Enterprise Security vs AlienVault OSSIM

Compared 6% of the time

Elastic Security vs AlienVault OSSIM

Compared 4% of the time

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OpenText Enterprise Security Manager vs Trellix ESM

Compared 22% of the time

IBM Security QRadar vs Trellix ESM

Compared 14% of the time

SentinelOne Singularity Complete vs Trellix ESM

Compared 12% of the time

Splunk Enterprise Security vs Trellix ESM

Compared 10% of the time

LogRhythm SIEM vs Trellix ESM

Compared 6% of the time

More Trellix ESM Competitors

Product Reports

Buyer's Guide

AlienVault OSSIM

January 2026

Download AlienVault OSSIM product report

Buyer's Guide

Trellix ESM

January 2026

Download Trellix ESM product report

Also Known As

OSSIM

McAfee ESM, NitroSecurity, McAfee Enterprise Security Manager

Overview

AlienVault OSSIM, Open Source Security Information and Event Management (SIEM), provides you with a feature-rich open source SIEM complete with event collection, normalization and correlation. Launched by security engineers because of the lack of available open source products, AlienVault OSSIM was created specifically to address the reality many security professionals face: A SIEM, whether it is open source or commercial, is virtually useless without the basic security controls necessary for security visibility.

AT&T

Make your organization more resilient and confident with Trellix Security Operations. Filter out the noise and cut complexity to deliver faster, more effective SecOps. Integrate your existing security tools and connect with over 650 Trellix solutions and third-party products.

Trellix

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

Buyer's Guide

AlienVault OSSIM vs. Trellix ESM

December 2025

Free Report: AlienVault OSSIM vs. Trellix ESM

Find out what your peers are saying about AlienVault OSSIM vs. Trellix ESM and other solutions. Updated: December 2025.

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