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Fortinet FortiSIEM vs Graylog Security comparison

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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)
11th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
75
Ranking in other categories
AI Observability (14th)
Graylog Security
Ranking in Security Information and Event Management (SIEM)
59th
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 September 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 2.2%, down from 3.5% compared to the previous year. The mindshare of Graylog Security is 0.6%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiSIEM2.2%
Graylog Security0.6%
Other97.2%
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

"It detects new technologies, vulnerabilities, and emerging threats on the internet."
"All in all, the product is a well rounded performer when it comes to combined infrastructure and security monitoring, however in traditional SIEM bake-offs, they need a lot more flavour to make it exciting."
"The most valuable feature is the ability to view all the network events on a single pane and find the point of contact or point of the incident."
"The most valuable feature is the differentiator, which has a combination of not only the SOC which covers the security operations aspect, but it also includes NOC capabilities."
"Fortinet FortiSIEM combines the SOC and NOC into a single solution with a single pane of glass."
"Technical support is very good. The people in support are excellent, and they know this product in and out."
"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 beautiful thing about Fortinet is that they have integrated many, many solutions."
"We use the solution to collect logs."
"The tool aggregates logs. We can see the logs in one place."
 

Cons

"Fortinet FortiSIEM could improve by having better integration and extensions. This would benefit by allowing us to give more rules."
"Their technical support is horrible. By horrible, I mean a train wreck of a disaster that has fallen off a bridge and caught fire."
"Sometimes, if there are changes made by a user on a database server, it can be difficult to get that information on the fly. I would like to see a situation where once I specify a user with the database server I need, and with the changes they have performed on that, I don't need to continue my search pattern to drill down just to get the information."
"There are some connectivity issues with FortiAnalyzer and FortiGate."
"The built-in APIs in Fortinet FortiSIEM are somewhat lacking and could be improved for better integration with external ITSM products."
"There could be more AI features included in the product."
"One of the things that actually opened a ticket about (and they couldn’t help me) is when traffic is leaving our network, it’ll only report the source."
"The initial setup is complex. They need to make it easier in terms of implementation."
"Graylog Security needs to incorporate security scorecards."
 

Pricing and Cost Advice

"Manageable, however would be better as pay as you go versus CapEX."
"The tool is really expensive. For what the tool does for our team, the price is fair."
"The price of Fortinet FortiSIEM is a lot less when compared to other solutions."
"The price is competitive."
"Pricing is determined based on the customer's budget."
"Fortinet FortiSIEM is not an expensive solution."
"The price of the solution is expensive. The license is scalable. If there are 10 devices it is simple to license."
"Please be cheaper and more simplified."
"I rate the tool's pricing a one out of ten."
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Top Industries

By visitors reading reviews
Outsourcing Company
11%
Comms Service Provider
9%
Financial Services Firm
9%
Construction Company
8%
Educational Organization
13%
Comms Service Provider
9%
Retailer
8%
Outsourcing Company
8%
 

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 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 is your primary use case for Fortinet FortiSIEM?
My main use case for Fortinet FortiSIEM is building a SOC and serving as an event management platform for correlating events in my work. I use Fortinet FortiSIEM for event correlation by building a...
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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: September 2026.
913,806 professionals have used our research since 2012.