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 #13 with an average rating of 7.2, while Trellix is ranked #27 with an average rating of 8.0. AT&T holds a 1.7% 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

4,374 Views
4,287 Comparison Views

80% willing to recommend

Trellix ESM

Read 38 Trellix ESM reviews

2,163 Views
1,947 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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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)

13th

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)

27th

Average Rating

7.4

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of February 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.7%, down from 4.2% 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	1.7%
Trellix ESM	1.2%
Other	97.1%

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.

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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

"The most valuable features of this solution are the data correlation and vulnerability assessment."

"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."

"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 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.""

"I recommend it due to the experience of the people running it."

"The paid version of the solution has reporting and better scalability options."

More AlienVault OSSIM pros

"It is user-friendly. The notification part of McAfee ESM is very easy."

"I like the ease of deployment."

"The solution is 100% stable. We really have had a great time working with it. It hasn't let us down."

"Scalability is quite easier with Trellix ESM, because all we need to do is add more receivers to it, so it can go to any point."

"It is easy to use."

"It blocks the things which are not to be allowed. It has an adaptive mode where it learns for itself."

"The most valuable feature for us is that it comes with many correlations, reports, and dashboards already available. It's also very easy to use."

"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."

More Trellix ESM pros

Cons

"AlienVault OSSIM on-premise version is more difficult to implement than the cloud version. Additionally, they should add integration between several different environments at once and improve their online knowledge base."

"The documentation could be improved."

"It takes some time. It does not give me a prompt response for any such [malicious] traffic. It takes time to get that alert from the AlienVault system."

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

"Sometimes technical issues take very long to get resolved."

"AlienVault OSSIM failed to provide our company a full insight, while also giving out a lot of false positives."

"They can add more compliance templates."

"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."

More AlienVault OSSIM cons

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

"The solution needs to improve case management. The UI is confusing."

"It seems McAfee does test its product before releasing. When we - not only us, other companies also - deploy McAfee, we face multiple issues from the customer side, after which, McAfee reacts and fixes the bugs."

"Customized reports and alerting functionality could be included in the dashboard."

"The only issue I have with McAfee is the amount of computer resources that it takes... it's definitely impacting some of the other applications that are running on a computer at the same time."

"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."

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

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

More Trellix ESM cons

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."

"The tool's licensing costs are yearly."

"AlienVault OSSIM is an open-source solution."

"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."

"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 expensive compared to its competitors."

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

More AlienVault OSSIM pricing and cost advice

"The product is slightly expensive."

"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 pricing is good, and they are competitive compared to providers such as RSA and IBM QRadar."

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

"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 price is good. It's moderate. We follow a pay-as-you-go model. There are different models available, and they can also be monthly. You can choose monthly or yearly. It's very flexible. If our existing customers exceed the current plan, you can just call McAfee and get it extended."

"The cost is dependent on the customer's environment and requirements."

More Trellix ESM pricing and cost advice

See which vendors are best for you

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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…

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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

Construction 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 ...

See all answers

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

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Compared 40% of the time

Venusense USM vs AlienVault OSSIM

Compared 10% of the time

Splunk Enterprise Security vs AlienVault OSSIM

Compared 7% of the time

USM Anywhere vs AlienVault OSSIM

Compared 7% of the time

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OpenText Enterprise Security Manager vs Trellix ESM

Compared 20% 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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