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Atomic ModSecurity Rules vs Fortinet FortiWeb Cloud WAF-as-a-Service comparison

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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

Atomic ModSecurity Rules
Ranking in Web Application Firewall (WAF)
29th
Average Rating
9.0
Reviews Sentiment
7.8
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Fortinet FortiWeb Cloud WAF...
Ranking in Web Application Firewall (WAF)
22nd
Average Rating
8.8
Reviews Sentiment
6.4
Number of Reviews
10
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2026, in the Web Application Firewall (WAF) category, the mindshare of Atomic ModSecurity Rules is 0.8%, down from 1.0% compared to the previous year. The mindshare of Fortinet FortiWeb Cloud WAF-as-a-Service is 0.8%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Fortinet FortiWeb Cloud WAF-as-a-Service0.8%
Atomic ModSecurity Rules0.8%
Other98.4%
Web Application Firewall (WAF)
 

Featured Reviews

Vahid Babaey - PeerSpot reviewer
PhD Student at University of North Carolina at Charlott
Open rules have enabled me to secure web apps against obfuscated SQL injection and XSS attacks
The best feature Atomic ModSecurity Rules offers is the open source aspect. I believe that because it's open source, all of the developers, programmers, and security experts are able to update this WAF and provide more rules, creating a more secure WAF for all of the clients and customers around the world. By accessing Atomic ModSecurity Rules, it has helped me significantly. Because of this open source feature, I am able to generate new rules and update the WAF and use this WAF in my research and also give it to other clients and customers to use the updated WAF. All of this is done just because of the open-source feature, because it can be updated.
NiteshSharma - PeerSpot reviewer
Pre Sales Architect at network techlab
Comprehensive web protection has secured public apps and supports advanced audit requirements
Fortinet FortiWeb Cloud WAF-as-a-Service has multiple valuable aspects. The WAF solution secures whatever public domains have been published by the public platform or internal servers exposed to public users. Firewalls have limitations, which is why I suggest using a WAF solution. The firewall provides the same features but in a limited edition. When discussing the SaaS platform or Layer 7 layer of security, you will receive multiple benefits. Firewalls have limitations with signatures, bot protection, and DOS protection. Fortinet FortiWeb Cloud WAF-as-a-Service is a dedicated WAF product that handles all DOS protection, bot protection, API security, endpoint connectivity, signature-based support, and top 10 OWASP support. Multiple features are available. AI and ML-based technology is available in almost every tool today. When discussing troubleshooting, there are AI models that will solve your problem and provide information. AI is helpful because it will give you proper information regarding errors and troubleshooting.

Quotes from Members

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

Pros

"The best feature Atomic ModSecurity Rules offers is the open source aspect, because all of the developers, programmers, and security experts are able to update this WAF and provide more rules, creating a more secure WAF for all of the clients and customers around the world."
"Regular updates are one of the aspects I appreciate about Fortinet FortiWeb Cloud WAF-as-a-Service, and it is provided by a leading brand in cybersecurity."
"I utilize Fortinet FortiWeb Cloud WAF-as-a-Service's AI-driven analytics, which is in the sixth generation of AI, and this is helping us protect against AI-based attacks, API-based attacks, and bot attacks."
"The company provides technical support, and they are mostly available 24/7."
"It is user-friendly and easy to work with."
"It is a secure tool."
"The technical support is really good."
"The initial setup is pretty easy, and it is easier than for the on-premises solution."
"It is more efficient and very helpful to everyone regarding future updates of Fortinet FortiWeb Cloud WAF-as-a-Service, and I do not currently face any issues and have good experience with the product."
 

Cons

"Additionally, I know that ModSecurity can block only SQL injection and XSS attacks, no more types of attacks."
"The utilization of AI in Fortinet FortiWeb Cloud WAF-as-a-Service still needs to be upgraded and improved."
"It is expensive. Actually, it is expensive."
"I do not have any notes on improvement."
"The only thing I encountered was related to integration, mostly concerning translation."
"The usability of the interface could be improved as it is not user-friendly."
"What I think could be improved in the future is the inclusion of runtime application self-protection, as RASP is currently not part of the program, but it would be beneficial if that could be added into the FortiAP-S Cloud product."
"To measure the success of Fortinet FortiWeb Cloud WAF-as-a-Service's services and reporting capability, there is one drawback."
"While we find the solution to be really good overall, some improvements could be made to the alerting system, specifically around the health checks of endpoints."
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Top Industries

By visitors reading reviews
Comms Service Provider
27%
Hospitality Company
13%
Manufacturing Company
10%
Outsourcing Company
10%
Financial Services Firm
12%
Comms Service Provider
11%
Outsourcing Company
11%
Construction Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise5
 

Questions from the Community

What needs improvement with Atomic ModSecurity Rules?
Atomic ModSecurity Rules can be improved by first studying and reading the structure of new obfuscated attacks, then trying to generate more specific and better rules to block these attacks, and th...
What is your primary use case for Atomic ModSecurity Rules?
My main use case for Atomic ModSecurity Rules is in my research, which tries to make websites secure against web attacks like SQL injection and XSS attacks. On one side, I try to generate some obfu...
What advice do you have for others considering Atomic ModSecurity Rules?
I would rate Atomic ModSecurity Rules nine out of ten. I chose nine out of ten because I have not studied other WAFs. I know that ModSecurity is the only open source WAF, but I believe that the oth...
What is your experience regarding pricing and costs for Fortinet FortiWeb Cloud WAF-as-a-Service?
It is expensive. Actually, it is expensive. When discussing small organizations, I would not recommend it to them. I always choose the enterprise because it is expensive. I just recommend Fortinet ...
What needs improvement with Fortinet FortiWeb Cloud WAF-as-a-Service?
Currently, I want to add that Fortinet FortiWeb Cloud WAF-as-a-Service is offering only two-factor authentication. I want them to provide SAML authentication. If it gets SAML authentication or some...
What is your primary use case for Fortinet FortiWeb Cloud WAF-as-a-Service?
When discussing Fortinet FortiWeb Cloud WAF-as-a-Service, I always recommend it. Either I can recommend F5. Most users require security via SSL, so I recommend Fortinet FortiWeb Cloud WAF-as-a-Serv...
 

Overview

Find out what your peers are saying about Imperva, Radware, F5 and others in Web Application Firewall (WAF). Updated: September 2026.
914,109 professionals have used our research since 2012.