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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 #18 with an average rating of 8.3. AT&T holds a 2.8% mindshare in SIEM, compared to Trellix’s 1.1% 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
  • 4,916 Views
  • 4,818 Comparison Views
80% willing to recommend
Trellix ESM
Read 38 Trellix ESM reviews
  • 1,584 Views
  • 1,441 Comparison Views
76% willing to recommend
 

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.

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To learn more, read our detailed AlienVault OSSIM vs. Trellix ESM Report (Updated: September 2025).
Buyer's Guide
AlienVault OSSIM vs. Trellix ESM
September 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)
12th
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)
18th
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 September 2025, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 2.8%, down from 4.4% compared to the previous year. The mindshare of Trellix ESM is 1.1%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Market Share Distribution
ProductMarket Share (%)
AlienVault OSSIM2.8%
Trellix ESM1.1%
Other96.1%
Security Information and Event Management (SIEM)
 

Featured Reviews

HarshBhardiya - PeerSpot reviewer
An open-source solution that provide good detection and more visibility
The solution is not scalable. It impacts so hard. In the initial stages, AlienVault OSSIM can be suitable for small environments. There may be limitations if the customer expresses a desire to expand and add more devices. In such cases, we would need to either explore additional solutions or work within the constraints of the existing setup. We have set up alerts and configured everything in AlienVault OSSIM. It actively monitors for any security incidents. It provides us with regular updates and notifications about any ongoing activities. Only one person is using the solution. It is the perfect solution for small businesses. I rate the solution’s scalability a three out of ten.
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Daniel Durian - PeerSpot reviewer
Helps to monitor and detect cyberattacks
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. Trellix ESM provides situation awareness. On the dashboard, I can see outbound and inbound communications to known threat hosts, IPS/IDS activity, and threat intelligence of the perimeter defense in the firewall. This information helps preempt attacks.
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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 product is easy to use."
"AlienVault OSSIM's GUI is very user-friendly."
"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 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 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."
"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."
"The threat policies of the solution are always very advanced and the best in the market. They are very persistent in terms of keeping up with security protocols."
"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.""
More AlienVault OSSIM pros
"It is easy to use and deploy. It comes with user-friendly manuals."
"It is easy to use."
"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 has performed well and delivered the results that I have been looking for."
"The most valuable feature is the capability to correlate different events from different platforms that we feed into it."
"Compared to other solutions, the user interface is good."
"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."
"The solution's technical support is great."
More Trellix ESM pros
 

Cons

"I suggest more in-built rules based on modern threats and environments to make it a more competitive solution."
"When comparing AlienVault OSSIM to other solutions it looks a bit outdated. Additionally, they need to improve their integration."
"The solution is not scalable."
"AlienVault OSSIM should improve the deployment and make it unified like the USM."
"The price of this solution is very high and it could be cheaper."
"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."
"It's so hard to configure and explore something new on it."
"AlienVault OSSIM’s configuration and integration could be a little easier."
More AlienVault OSSIM cons
"Customized reports and alerting functionality could be included in the dashboard."
"The only drawback is that they don't have any packet capturing or network behavior analysis."
"I have to purchase a new box now. Its existing box is not scalable and I can't use it anymore."
"Tech support is required each time there is a system update of the solution."
"The product's stability is an area of concern where improvements are required."
"I would like to see good analytics in future releases."
"The product is mature and needs little improvement, but we could enhance the customized dashboarding based on use cases."
"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

"The licensing fees for the non-community edition are paid on an annual basis, and there are no costs in addition to this."
"AlienVault OSSIM is an open-source solution."
"We are using the community version, which can be used for 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."
"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."
"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."
"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."
"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 licensing cost is based on EPS."
"You should buy the distributed option instead of the all-in-one for environments with more than 1000 end points."
"Regarding pricing, Trellix ESM is not that expensive. It's less than half the cost of IBM QRadar."
"The cost is dependent on the customer's environment and requirements."
"The pricing is good, and they are competitive compared to providers such as RSA and IBM QRadar."
"It is an inexpensive product. We purchase its yearly license."
"The cost is all included. The finance department handles the financial part, and we mostly don't get involved in it."
"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."
More Trellix ESM pricing and cost advice
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Comparison Review

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Feb 26, 2015
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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
14%
Comms Service Provider
12%
University
8%
Educational Organization
8%
Comms Service Provider
14%
Financial Services Firm
11%
Computer Software Company
10%
Manufacturing Company
6%
 

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 Enterprise24
 

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?
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...
See all answers
What do you like most about McAfee ESM?
The solution's technical support is great.
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
 

Comparisons

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USM Anywhere vs AlienVault OSSIM
Compared 6% of the time
Venusense USM vs AlienVault OSSIM Logo
Venusense USM vs AlienVault OSSIM
Compared 5% of the time
Splunk Enterprise Security vs AlienVault OSSIM Logo
Splunk Enterprise Security vs AlienVault OSSIM
Compared 4% of the time
Elastic Security vs AlienVault OSSIM Logo
Elastic Security vs AlienVault OSSIM
Compared 4% of the time
More AlienVault OSSIM Competitors
OpenText Enterprise Security Manager vs Trellix ESM Logo
OpenText Enterprise Security Manager vs Trellix ESM
Compared 27% of the time
Splunk Enterprise Security vs Trellix ESM Logo
Splunk Enterprise Security vs Trellix ESM
Compared 17% of the time
IBM Security QRadar vs Trellix ESM Logo
IBM Security QRadar vs Trellix ESM
Compared 15% of the time
SentinelOne Singularity Complete vs Trellix ESM Logo
SentinelOne Singularity Complete vs Trellix ESM
Compared 11% of the time
LogRhythm SIEM vs Trellix ESM Logo
LogRhythm SIEM vs Trellix ESM
Compared 10% of the time
More Trellix ESM Competitors
 

Product Reports

Buyer's Guide
AlienVault OSSIM
September 2025
AlienVault OSSIM reportDownload AlienVault OSSIM product report
Buyer's Guide
Trellix ESM
August 2025
Trellix ESM reportDownload 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
September 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: September 2025.
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