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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 #17 with an average rating of 8.4. AT&T holds a 2.6% 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
  • 4,632 Views
  • 4,539 Comparison Views
80% willing to recommend
Trellix ESM
Read 38 Trellix ESM reviews
  • 1,573 Views
  • 1,431 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)
17th
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 October 2025, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 2.6%, down from 4.3% 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 OSSIM2.6%
Trellix ESM1.1%
Other96.3%
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 majorly used for threat detection of the agents on servers and endpoints."
"Network traffic analysis is highly efficient."
"AlienVault OSSIM is an enterprise solution that sells easily. It is rated highly by organizations."
"With AlienVault you get everything in one box."
"Its user-friendliness is the most valuable. It is very easy to use and explore. The dashboard is very well packaged and integrated. You don't have to spend a lot of time in configuring it and checking out the RPM etc. It is also free and very powerful."
"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 most valuable feature is the logging capability."
"AlienVault OSSIM's GUI is very user-friendly."
More AlienVault OSSIM pros
"The most valuable feature is the correlation rules."
"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 support I have received from the vendor has been great."
"The product’s most valuable feature is log monitoring."
"The strongest part of Trellix ESM is that we get quite good reports."
"It is easy to use and deploy. It comes with user-friendly manuals."
"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 could improve by having better integration with some of the newer tools."
"AlienVault OSSIM’s configuration and integration could be a little easier."
"The price of this solution is very high and it could be cheaper."
"The solution is not scalable."
"Lacking in depth of reporting."
"There needs to be more support or some kind of training program so users can self-learn the system more effectively."
"The incidence reporting could be better."
"I don't like to work on OSSIM because it is unpredictable."
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."
"The product’s alert response feature needs improvement. It could be more flexible and secure."
"The disk space needed for events is not clear. In all clients, we had at least more than 100GB free that we could not use."
"The only drawback is that they don't have any packet capturing or network behavior analysis."
"Cloud integration has room for improvement because they're not full-fledged to integrate with the cloud solutions that come. They use different integration platforms to bring in data, and that needs to be improved."
"McAfee ESM is not user-friendly and the log is not accurate. For instance, if I were assigned to generate a log for changes made today, I wouldn't be able to see all the modifications. While Palo Alto allows us to see all changes, McAfee ESM only captures one out of every ten changes. It's crucial to have visibility into all changes made."
"It cannot integrate with our Next-Generation Firewall and few applications such as Cisco ACI."
"The initial setup is difficult and could improve."
More Trellix ESM cons
 

Pricing and Cost Advice

"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."
"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."
"The tool's licensing costs are yearly."
"The solution is open source, so it's free to use."
"AlienVault OSSIM is an open-source solution."
"The licensing fees for the non-community edition are paid on an annual basis, and there are no costs in addition to this."
"We are using the community version, which can be used for free."
More AlienVault OSSIM pricing and cost advice
"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 licensing cost is based on EPS."
"The pricing is fair."
"It is an inexpensive product. We purchase its yearly license."
"You should buy the distributed option instead of the all-in-one for environments with more than 1000 end points."
"We renew our license annually."
"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."
More Trellix ESM pricing and cost advice
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Comparison Review

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Feb 26, 2015
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Read full review
 

Top Industries

By visitors reading reviews
Computer Software Company
14%
Comms Service Provider
12%
University
9%
Financial Services Firm
8%
Comms Service Provider
16%
Financial Services Firm
10%
Computer Software Company
8%
Manufacturing Company
7%
 

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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Venusense USM vs AlienVault OSSIM
Compared 7% of the time
USM Anywhere vs AlienVault OSSIM Logo
USM Anywhere vs AlienVault OSSIM
Compared 7% of the time
Splunk Enterprise Security vs AlienVault OSSIM Logo
Splunk Enterprise Security vs AlienVault OSSIM
Compared 5% 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 28% of the time
Splunk Enterprise Security vs Trellix ESM Logo
Splunk Enterprise Security vs Trellix ESM
Compared 16% 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 12% 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
October 2025
AlienVault OSSIM reportDownload AlienVault OSSIM product report
Buyer's Guide
Trellix ESM
October 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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We monitor all Security Information and Event Management (SIEM) reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.