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AlienVault OSSIM vs Splunk Enterprise Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 25, 2026

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)
24th
Average Rating
7.4
Reviews Sentiment
7.1
Number of Reviews
31
Ranking in other categories
No ranking in other categories
Splunk Enterprise Security
Ranking in Security Information and Event Management (SIEM)
1st
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
392
Ranking in other categories
Log Management (1st), IT Operations Analytics (1st)
 

Mindshare comparison

As of June 2026, in the Security Information and Event Management (SIEM) category, the mindshare of AlienVault OSSIM is 1.2%, down from 3.6% compared to the previous year. The mindshare of Splunk Enterprise Security is 7.3%, down from 9.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Splunk Enterprise Security7.3%
AlienVault OSSIM1.2%
Other91.5%
Security Information and Event Management (SIEM)
 

Featured Reviews

BP
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.
Sathis-Kumar - PeerSpot reviewer
Senior Manager at Bank of America
Helps us detect cyber threats quickly and integrate multiple feeds effectively
Overall, the product is good, but when it comes to some infrastructure issues, we have to dig into more logs. There is no straightforward indication of an issue. Health check kind of dashboards are not available. More AI would help us, and more optimization, since security products run more queries. The AI module could suggest solutions, optimizing queries or workload balancing. If the product itself advises on running queries during peak times, it would be similar to what ChatGPT currently offers. We see quite a few issues on stability. Even last week, we faced something, and identifying bottlenecks is not easy. We need more SMEs, and there is no mechanism to tell us about indexer or search head issues. Self-monitoring dashboards could be beneficial. The technical support still requires more improvement. Often, primary support takes a lot of time and forwards most solutions to the engineering side. The primary support team has very limited knowledge to provide.

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.""
"You can customize the dashboards as well as the reporting."
"Asset discovery is good."
"The initial setup was straightforward."
"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."
"It is a perfectly nice and free tool for compliance testing, assessment, and some basic vulnerability."
"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."
"The product is easy to use."
"It gives us good visibility into multiple environments, including cloud, on-premises, and hybrid; irrespective of platform."
"I would strongly recommend this product, as it would be very beneficial for service operations and management."
"It has reduced the time to resolution, time to investigate, and time to troubleshoot for debugging issues."
"I evaluate customer service and technical support as excellent."
"Splunk Enterprise Security is doing its job in helping improve my organization's business resilience."
"From the class that I took this week, being able to create notable events from whatever you find in the data set is pretty useful."
"You can check up on security from the dashboards."
"Splunk Enterprise Security stands out for its ability to integrate with existing security tools, provide informative dashboards, and offer IT Service Assurance functionality that goes beyond basic threat detection to include service performance monitoring."
 

Cons

"The price of this solution is very high and it could be cheaper."
"I would like the solution to be able to integrate with my firewall, my IDS and my Honeypot solutions so that it can provide real-time reporting as things occur and then have alert sent to me on my phone when suspicious activity is happening."
"The correlation engine needs to be improved."
"It's so hard to configure and explore something new on it. It is not easy to find the steps we need to follow in order to use the solution effectively."
"AlienVault OSSIM failed to provide our company a full insight, while also giving out a lot of false positives."
"I would advise others to not implement it for any enterprise-level organization."
"They can add more compliance templates."
"Lacking in depth of reporting."
"It is a hugely complicated product."
"There is a learning curve in order to start using machine learning. We have been trying to do it for three years, and we have not managed anything. It is too complex."
"Due to the size limit, we could not see the full product."
"It currently has limited default rules and customizations. If they can concentrate more on the compliance part and the security information part, it would be helpful."
"The integration with all our tool sets felt like we were reinventing the wheel, which was a pain point for us."
"Over time I will have more requirements and I can foresee the solution could improve the search algorithm to run and output the data faster."
"The price of the solution could be cheaper."
"The product's price may be an area of concern where improvements are required."
 

Pricing and Cost Advice

"OSSIM is free."
"The tool's licensing costs are yearly."
"We are using the community version, which can be used for 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."
"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."
"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 have had a reduction in the time it takes to resolve issues and correlate what has failed."
"The pricing of Splunk Enterprise Security is high."
"This solution is costly. Splunk is obviously a great product, but you should only choose this product if you need all the features provided. Otherwise, if you don't need all the features to meet your requirements, there are probably other products that will be more cost-effective. It's cost versus the functionality requirement."
"Splunk Enterprise Security is priced lower than competitors."
"Pricing and licensing are quite high compared to other tools or SIEM tools, but the features justify it."
"It's a yearly subscription."
"Splunk Enterprise Security's pricing is based on data volume, which generally suits large enterprises."
"The pricing and licensing of the product are quite high."
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Comparison Review

VS
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…
 

Top Industries

By visitors reading reviews
Comms Service Provider
15%
Manufacturing Company
8%
Computer Software Company
8%
Educational Organization
7%
Financial Services Firm
14%
Manufacturing Company
9%
Computer Software Company
8%
Comms Service Provider
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 Business123
Midsize Enterprise52
Large Enterprise272
 

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 is your primary use case for AlienVault OSSIM?
This solution is very similar to most of the other MSSPs that you would find out there. When I look at use cases, AlienVault was initially aimed at small to medium businesses. It grew, and that was...
What SOC product do you recommend?
For tools I’d recommend: -SIEM- LogRhythm -SOAR- Palo Alto XSOAR Doing commercial w/o both (or at least an XDR) is asking to miss details that are critical, and ending up a statistic. Also, rememb...
What is a better choice, Splunk or Azure Sentinel?
It would really depend on (1) which logs you need to ingest and (2) what are your use cases Splunk is easy for ingestion of anything, but the charge per GB/Day Indexed and it gets expensive as log ...
How does Splunk compare with Azure Monitor?
Splunk handles a high amount of data very well. We use Splunk to capture information and as an aggregator for monitoring information from different sources. Splunk is very good at alerting us if we...
 

Also Known As

OSSIM
No data available
 

Overview

 

Sample Customers

Council Rock School District
Splunk has more than 7,000 customers spread across over 90 countries. These customers include Telenor, UniCredit, ideeli, McKenney's, Tesco, and SurveyMonkey.
Find out what your peers are saying about AlienVault OSSIM vs. Splunk Enterprise Security and other solutions. Updated: April 2026.
896,563 professionals have used our research since 2012.