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 7.4, while Trellix is ranked #28 with an average rating of 8.0. AT&T holds a 1.6% 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

4,307 Views
4,221 Comparison Views

80% willing to recommend

Trellix ESM

Read 38 Trellix ESM reviews

2,380 Views
2,142 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: March 2026).

Buyer's Guide

AlienVault OSSIM vs. Trellix ESM

March 2026

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Helped 884,873 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)

28th

Average Rating

7.4

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of March 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.6%, down from 4.1% 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) Mindshare Distribution
Product	Mindshare (%)
AlienVault OSSIM	1.6%
Trellix ESM	1.2%
Other	97.2%

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 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 open vault component and the checking of vulnerabilities are the most valuable features. The page management helps with this. If you know how your device is vulnerable at least you can do something about it."

"The most valuable features of AlienVault OSSIM are case management, ease of configuration, and investigation."

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

"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.""

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

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

"The solution is free to use."

More AlienVault OSSIM pros

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

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

"The most valuable feature is the capability to correlate different events from different platforms that we feed into it."

"Doing Incident analysis in my opinion with ESM is easier than other solutions."

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

"The most valuable features of McAfee ESM are intrusion detection, malware protection, and the device controller."

"The tool's effectiveness depends on how you define your log sources. To build visibility of incoming and outgoing traffic, you need logs from perimeter defense, firewalls, web application firewalls, and endpoint protection. With good traffic visibility, incident response time is really quick."

"We now have a better view of our security posture from an external and internal point of view."

More Trellix ESM pros

Cons

"The user interface could be improved."

"The correlation engine needs to be improved."

"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 user interface needs to be friendlier across the board."

"We need more dashboards and we need more customization for dashboards."

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

"AlienVault OSSIM is costly."

"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."

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."

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

"The API the product provides still needs to develop some maturity."

"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."

"The only drawback is that they don't have any packet capturing or network behavior analysis."

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

"The initial setup is difficult and could improve."

"Product currently requires Flash."

More Trellix ESM cons

Pricing and Cost Advice

"The tool's licensing costs are yearly."

"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."

"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."

"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."

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

"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."

More AlienVault OSSIM pricing and cost advice

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

"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."

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

"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."

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

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

Comms Service Provider

12%

Manufacturing Company

Financial Services Firm

University

Comms Service Provider

17%

Manufacturing Company

Financial Services Firm

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 ...

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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

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Splunk Enterprise Security vs AlienVault OSSIM

Compared 7% of the time

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Compared 5% of the time

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Compared 17% of the time

IBM Security QRadar vs Trellix ESM

Compared 13% of the time

SentinelOne Singularity Complete vs Trellix ESM

Compared 11% of the time

Splunk Enterprise Security vs Trellix ESM

Compared 10% of the time

Fortinet FortiSIEM vs Trellix ESM

Compared 5% of the time

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Product Reports

Buyer's Guide

AlienVault OSSIM

March 2026

Download AlienVault OSSIM product report

Buyer's Guide

Trellix ESM

February 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

March 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: March 2026.

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