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Fortinet FortiSIEM vs Splunk Enterprise Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Apr 6, 2025

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

Fortinet FortiSIEM
Ranking in Security Information and Event Management (SIEM)
7th
Average Rating
7.6
Reviews Sentiment
6.5
Number of Reviews
74
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
7.6
Number of Reviews
315
Ranking in other categories
Log Management (2nd), IT Operations Analytics (1st)
 

Mindshare comparison

As of July 2025, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 3.3%, up from 3.0% compared to the previous year. The mindshare of Splunk Enterprise Security is 9.4%, down from 12.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM)
 

Featured Reviews

Oliver Jackson - PeerSpot reviewer
Systems monitoring enhanced by firewall and intrusion detection features
My primary use case for Fortinet FortiSIEM is systems monitoring and alerting. I use it for standard functions like log monitoring, incident detection, and notification.  My customers are mostly medium-sized enterprises ranging from engineering companies, mining companies, independent schools, and…
ROBERT-CHRISTIAN - PeerSpot reviewer
Has many predefined correlation rules and is brilliant for investigation and log analysis
It is very complicated to write your own correlation rules without the help of Splunk support. What Splunk could do better is to create an API to the standard SIEM tools, such as Microsoft Sentinel. The idea would be to make it less painful. In ELK Stack, Kibana is the query language with which you can search log files. I believe Splunk has also a query language in which they search their log files, but once you have identified the log file that you want to use for further security correlation, you want to very quickly transport that into your SIEM tool, such as Microsoft Sentinel. That is something that Splunk could make a little bit less painful because it is a lot of effort to find that log file and forward it. An API with Microsoft Sentinel or a similar SIEM tool would be a good idea.

Quotes from Members

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

Pros

"This solution offers extensive customization options, making it possible to adapt it precisely to their requirements."
"The most valuable features of the solution is its integration with other technologies, especially its ability to collect logs from Cisco and Aruba devices along with Fortinet products."
"The Threat Hunting feature provides complete traffic analysis."
"FortiSIEM helped us discover all the threats at the time that were attacking the IT services of the company. We now have multiple-level authentication."
"The most valuable feature is the dashboard. CMDB database collects data from a lot of pre-configured devices."
"We have many application systems, and I can set up Fortinet FortiSIEM for users to monitor their systems."
"It's a very nice solution to work with."
"Both the collecting logs and duo correlation are valuable features for us."
"Ease of correlation, creating correlation searches are easy and you can combine multiple sources with little effort"
"The stability of Splunk Enterprise Security is very impressive; it is a very stable product."
"The integration is seamless with many devices and operating systems."
"Alerts when a server is malfunctioning, monitors external attacks, and takes action to stop spreading viruses."
"The compatibility with the add-ons helps us add more data in the same compatible format and use data models to elaborate and make it faster."
"Splunk Enterprise Security quickly gives us a view of an endpoint or a user or identity. If I want to look for an identity or an asset, I just quickly go into Splunk Enterprise Security. I know where to go and get a quick analysis for a respective object."
"It has a drag-and-drop interface, so you don't need to know SQL or Java to construct a query on Splunk. The resolution time is about the same, but it took longer to discover the issue with ArcSight. Our previous solution took about an hour or more, but Splunk can do it within a few minutes or an hour at most."
"Its dashboard is valuable. If you have a good knowledge of how to create a dashboard, you can create any dashboard related to cybersecurity. If fine-tuned, the alarms that are triggered for instant review are also very valuable and useful."
 

Cons

"The dashboard needs to improve."
"The challenge I face with Fortinet FortiSIEM is the lack of support."
"Fortinet FortiSIEM needs to provide better API integrations to users."
"FortiSIEM is a bit resource-hungry, so work should be done on hardware resource utilization to consume less hardware."
"They should enhance the solution's AI capabilities, including XDR and EDR."
"It lacks a "wizard" that shows a particular user's activity or particular circumstance. I think the interface is intimidating because there's so much information there."
"Creating parsers to try make unknown events or currently unsupported devices produce meaningful information is extremely cumbersome."
"The reporting feature is not very attractive for the upper management and I am not able to perform complex/nested queries."
"It would be nice if they had a wizard to construct searches, including more complex searches that include math or statistics."
"AngularJS/ReactJS inclusion could be made easier in GUI."
"Splunk should have more regional data centers in the Middle East."
"The tool should include more real-world use case examples built out either through videos or in the community."
"The solution is expensive."
"The main issue that I have with it is that the field transformations sometimes overlap with those in Splunk Enterprise, and then you get permissions issues that lead to troubles."
"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 platform part is good, but it requires many features from the security aspect."
"We were inundated with the amount of alerts and alarms that we could get out of it. It is also a resource hog and we didn't have the resources to support it on-prem so we're taking it offline now."
 

Pricing and Cost Advice

"There are additional features that cost more than the standard licensing fees."
"There is a need to make yearly payments towards the licensing charges attached to the product. The free version license of the product is available for two months."
"The price of the solution is expensive. The license is scalable. If there are 10 devices it is simple to license."
"Fortinet's products are not expensive, it is less than the competition."
"Manageable, however would be better as pay as you go versus CapEX."
"We bought the perpetual license, so we own the product, but there is a three-year support renewal fee for that."
"Pricing is acceptable for more than 90% of our customers, as they normally get discounts."
"If one is cheap and ten is expensive. I rate the tool's price as an eight out of ten. Compared with Splunk or Oracle, Fortinet is cheap."
"Splunk should be able to integrate with other product using the free version."
"I assume that the pricing is reasonable, because if it was too costly, there are other alternatives."
"The license for Splunk Enterprise Security is expensive."
"It is expensive. I used to buy it early on, but then they combined it into a higher-up organization. They buy it for multiple systems now. Last time, I paid around 60K for it. There is just the licensing fee. That's all."
"Free Splunk license for PoCs on personal machines and the ability to scale the PoC to an enterprise level app."
"The price of Splunk Enterprise Security is high."
"Our customers often complain that the price of Splunk is too high."
"Licensing is a yearly, one-time cost."
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Use our free recommendation engine to learn which Security Information and Event Management (SIEM) solutions are best for your needs.
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Comparison Review

VS
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
Computer Software Company
15%
Financial Services Firm
10%
Comms Service Provider
7%
Government
7%
Computer Software Company
15%
Financial Services Firm
14%
Manufacturing Company
8%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Fortinet FortiSIEM?
Fortinet FortiSIEM needs to provide better API integrations to users.
What is your experience regarding pricing and costs for Fortinet FortiSIEM?
The pricing is reasonable, which is why it is preferred by government customers. Windows agent licenses cost around 3,000 Rupees per device per year.
What needs improvement with Fortinet FortiSIEM?
Fortinet FortiSIEM should broaden its remediation part to include more features for incident management. Currently, to manage repetitive incidents or for remediation, I need to use a separate softw...
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

FortiSIEM, AccelOps
No data available
 

Overview

 

Sample Customers

FortiSIEM has hundreds of customers worldwide in markets including managed services, technology, financial services, healthcare, and government. Customers include Aruba Networks, Compushare, Port of San Diego, Cleveland Indians, Infoblox, Healthways, and Referentia.
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 Fortinet FortiSIEM vs. Splunk Enterprise Security and other solutions. Updated: June 2025.
860,168 professionals have used our research since 2012.