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AlienVault OSSIM vs Cortex XSIAM comparison

 

Comparison Buyer's Guide

Executive Summary

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
Cortex XSIAM
Ranking in Security Information and Event Management (SIEM)
13th
Average Rating
8.6
Reviews Sentiment
6.7
Number of Reviews
15
Ranking in other categories
Identity Threat Detection and Response (ITDR) (5th), AI-Powered Cybersecurity Platforms (7th)
 

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 Cortex XSIAM is 3.0%, up from 1.7% 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%
Cortex XSIAM3.0%
Other94.4%
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.
AKASH MAJUMDER - PeerSpot reviewer
Incident response times have significantly reduced with efficient device integration and log parsing capabilities
Cortex XSIAM needs improvements in terms of data onboarding, parsers, and third-party integration supports. Additionally, a future update request is to enable tagging of endpoints in groups, similar to a feature available in Cortex XDR. The AI analytics need fine-tuning because some use cases are not working from my side.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The initial setup was straightforward. I didn't have any problems."
"The most valuable features of this solution are the data correlation and vulnerability assessment."
"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."
"Better than other SIEM solutions because almost everything can be integrated."
"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."
"Network traffic analysis is highly efficient."
"The product is easy to use."
"The initial setup is straightforward."
"Since implementing Cortex XSIAM, incident response times have been significantly reduced by approximately twenty percent."
"The flexibility for creating manual workflows stands out."
"It does a better job of identifying anomalies that are more likely to be incidents of compromise without as many false positives or false negatives."
"The flexibility for creating manual workflows stands out."
"One of the valued aspects of the product is its use of artificial intelligence to detect security vulnerabilities."
"The most valuable aspect is that Cortex XSIAM doesn't generate excessive alerts, refines all search results effectively, and filters out incidents where SOC intervention isn't necessary, allowing engineers to focus only on what matters."
"The most valuable feature is the integration capability."
"I would give Cortex XSIAM a rating of ten out of ten."
 

Cons

"AlienVault OSSIM failed to provide our company a full insight, while also giving out a lot of false positives."
"The user interface needs to be friendlier across the board."
"I suggest more in-built rules based on modern threats and environments to make it a more competitive solution."
"They can add more compliance templates."
"AlienVault OSSIM should improve the deployment and make it unified like the USM."
"The solution is not scalable."
"The documentation could 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 standard integrations are very limited, and the integrations available are not listed in the marketplace."
"Cortex could improve the detection and online resolution of security vulnerabilities."
"The solution’s pricing and technical support could be improved."
"Cortex XSIAM is on the expensive side and requires substantial improvement in pricing."
"The standard integrations are very limited, and the integrations available are not listed in the marketplace. Obtaining validation for integrations from Palo Alto takes around eight months, which is quite long."
"Further integration capabilities with various other software products that can seamlessly tie into Cortex XSIAM would be advantageous."
"Cortex XSIAM needs improvements in terms of data onboarding, parsers, and third-party integration supports."
"The first impression is that XSIAM would be more expensive than others we tried."
 

Pricing and Cost Advice

"We are using the community version, which can be used for free."
"OSSIM is free."
"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 an open-source solution."
"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 tool's licensing costs are yearly."
"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 licensing fees for the non-community edition are paid on an annual basis, and there are no costs in addition to this."
"The product cost could be considered value for money compared to other solutions in the market, though it is quite high."
"In terms of pricing, we found Cortex XSIAM to offer a very reasonable and competitive rate."
"The solution comes at a significant cost."
"The solution is expensive compared to its competitors."
"Since Palo Alto is trying to get as many new customers as possible, they're offering very competitive pricing."
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Comms Service Provider
12%
University
8%
Educational Organization
8%
Computer Software Company
12%
Manufacturing Company
10%
Financial Services Firm
10%
Government
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 Business9
Midsize Enterprise2
Large Enterprise4
 

Questions from the Community

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...
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...
What do you like most about Cortex XSIAM?
It is an effective solution in terms of performance and functionalities.
What is your experience regarding pricing and costs for Cortex XSIAM?
The cost of Cortex XSIAM in the India market differs from other regions. When considering competition, from a sales perspective, the pricing is acceptable.
What needs improvement with Cortex XSIAM?
Cortex XSIAM is on the expensive side and requires substantial improvement in pricing. There are other features that could be improved, including integration with vendors such as CyberArk. I would ...
 

Also Known As

OSSIM
No data available
 

Overview

 

Sample Customers

Council Rock School District
Information Not Available
Find out what your peers are saying about AlienVault OSSIM vs. Cortex XSIAM and other solutions. Updated: September 2025.
869,760 professionals have used our research since 2012.