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Fortinet FortiSIEM vs Graylog Security comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 2024

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
6.2
Number of Reviews
76
Ranking in other categories
AI Observability (5th)
Graylog Security
Ranking in Security Information and Event Management (SIEM)
42nd
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 2.8%, down from 3.0% compared to the previous year. The mindshare of Graylog Security is 0.6%, up from 0.5% 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 (%)
Fortinet FortiSIEM2.8%
Graylog Security0.6%
Other96.6%
Security Information and Event Management (SIEM)
 

Featured Reviews

SY
Network Engineer at Ogma Consulting
Comprehensive monitoring boosts security, yet incident management features need expansion
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 software called FortiSOAR. Additionally, the search functionality in FortiAI should be improved to provide more precise results, making it easier for me to understand what actions need to be taken.
Tony Zafiropoulos - PeerSpot reviewer
Owner/ Chief Engineer at Fixvirus.com
Aggregates logs in one place and helps to review data points
We tried Graylog Security, starting with their inexpensive open-source version. We tested it out and continued using it for a while. As for the main differences between Graylog Security and other vendors, some users might prefer cloud-based platforms over on-premises solutions. It isn't inherently cloud-native, but that might not matter much for some.

Quotes from Members

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

Pros

"Fortinet FortiSIEM provides good detection against advanced threats."
"FortiSIEM sends an email or SMS notifications to admins when there are significant incidents. It's a highly efficient way of responding to incidents."
"Our customer did not have security monitoring in the first place. With this solution, it provided security posture management and visibility about the security landscape and threats that they had."
"The seamless integration with FortiGate is the solution's most valuable aspect."
"It is used as an alerting platform."
"It works well with medium to large-scale enterprises."
"Both the collecting logs and duo correlation are valuable features for us."
"Technical support is helpful."
"We use the solution to collect logs."
"The tool aggregates logs. We can see the logs in one place."
 

Cons

"The stability of the product is an area of concern where improvements are required."
"FortiSIEM needs to expand its integration with third-party vendors. I don't know if Forcepoint has been added, but there were limited resources for integrating Forcepoint solutions when we implemented FortiSIEM. It integrates well with other Fortinet products and solutions from established cybersecurity companies like Palo Alto but doesn't integrate with some of the newer vendors."
"Customer support service could be better."
"The biggest thing that could be better is a quicker response to support cases."
"The built-in APIs in Fortinet FortiSIEM are somewhat lacking and could be improved for better integration with external ITSM products."
"When compared with some competitors, in terms of performance, the CPU and RAM requirements and the capability of coordination with development all need some improvement."
"Network detection and response is a separate product."
"The built-in APIs in Fortinet FortiSIEM are somewhat lacking and could be improved for better integration with external ITSM products."
"Graylog Security needs to incorporate security scorecards."
 

Pricing and Cost Advice

"There are additional features that cost more than the standard licensing fees."
"The solution is available for both, perpetual and subscription licenses."
"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."
"This is probably more on the lower cost end of the spectrum compared to competing products. Fortinet's license model is based on events per second, which makes sense, but that's not typical. It makes it very hard to calculate what your costs are going to be as you scale the platform because some log sources, such as firewall logs, are very noisy, and there are lots and lots of events per second, but some of them are not. So, it becomes a bit of a science experiment trying to guess what your costs are going to be as you scale the solution. This is where other competing products perhaps have a more straightforward license model."
"Fortinet FortiSIEM is not an expensive solution."
"FortiSIEM's licensing is based on EPS, and its pricing is competitive in the market."
"Fortinet FortiSIEM is very cost-efficient compared to other SIEM solutions."
"I rate the tool's pricing a one out of ten."
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Financial Services Firm
9%
Comms Service Provider
8%
Manufacturing Company
6%
Educational Organization
11%
Financial Services Firm
8%
Retailer
7%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business34
Midsize Enterprise22
Large Enterprise24
No data available
 

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?
My experience with pricing, setup cost, and licensing for Fortinet FortiSIEM is wonderful, as it offers an excellent license compared to other vendors.
What needs improvement with Fortinet FortiSIEM?
Fortinet FortiSIEM is great overall. Performance could be enhanced, but I do not wish to elaborate on needed improvements.
What do you like most about Graylog Security?
The tool aggregates logs. We can see the logs in one place.
What is your primary use case for Graylog Security?
I feed different data points to the tool and review them.
What advice do you have for others considering Graylog Security?
I rate the overall product an eight out of ten. It's a good option for getting started.
 

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.
Information Not Available
Find out what your peers are saying about Fortinet FortiSIEM vs. Graylog Security and other solutions. Updated: December 2025.
881,114 professionals have used our research since 2012.