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: February 2026).

Buyer's Guide

AlienVault OSSIM vs. Trellix ESM

February 2026

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Helped 881,733 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)

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 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.""

"The most valuable features of AlienVault OSSIM are vulnerability assessment, network intrusion detection system, response to critical events, and awareness of the whole network."

"The initial setup was straightforward. I didn't have any problems."

"You can customize the dashboards as well as the reporting."

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

"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."

"The product is majorly used for threat detection of the agents on servers and endpoints."

"It has helped us remediate threats in the past by providing significant events that assisted in identifying suspicious activities, such as logins from multiple countries."

More AlienVault OSSIM pros

"Trellix ESM utilizes fewer human resources and improves security and visibility."

"The product’s most valuable feature is log monitoring."

"It enables us to detect malicious threats, issues, or vulnerabilities in our network."

"The most valuable feature is for the security operation center because it provides visibility of all traffic within the company infrastructure."

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

"It has good technical support, which is available around the clock. You can call up anytime and get whatever you want. My queues are resolved."

"The solution's technical support is great."

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

More Trellix ESM pros

Cons

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

"The documentation could be improved."

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

"They can add more compliance templates."

"I suggest more in-built rules based on modern threats and environments to make it a more competitive solution."

"It's so hard to configure and explore something new on it."

"AlienVault OSSIM could improve by having better integration with some of the newer tools."

"Lacking in depth of reporting."

More AlienVault OSSIM cons

"It is not a very advanced solution, and it is for very generic use cases. It cannot cope with the advanced requirements that we're going to have. For example, for multiple authentication failures, it is still based on Windows events for detecting multiple login failures, whereas other companies are going beyond and working on implementing two-factor authentication. It is time to correlate the two-factor authentication results with authentification failures, which is not happening with McAfee ESM. The performance of the tool should be improved because it is very slow. The data display on the console is very slow in McAfee ESM. Its data storage is still old-fashioned, and it should be improved and upgraded to the latest versions. They have to come up with some new ideas to match what other leaders in the same domain are doing. For example, in Splunk, when you search for information for the last 60 days or five months, it quickly shows the information, but that is not the case with McAfee. The results should be quicker and faster on the console. They should integrate some additional features such as User Behavior Analytics (UBA) and automation. The threat intelligence part should also be improved on McAfee."

"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."

"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."

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

"It cannot integrate with our Next-Generation Firewall and few applications such as Cisco ACI."

"I would like to see improvements to the user interface."

"We cannot add new data sources to the most recent version."

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."

"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."

"OSSIM is free."

"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."

"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."

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

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

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

"Regarding pricing, Trellix ESM is not that expensive. It's less than half the cost of IBM QRadar."

"We renew our license annually."

"The pricing is fair."

"The product is slightly expensive."

"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

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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

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 7% of the time

USM Anywhere vs AlienVault OSSIM

Compared 7% of the time

Elastic Security vs AlienVault OSSIM

Compared 5% 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

February 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

February 2026

Free Report: AlienVault OSSIM vs. Trellix ESM

Find out what your peers are saying about AlienVault OSSIM vs. Trellix ESM and other solutions. Updated: February 2026.

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