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Fortinet FortiWeb Cloud WAF-as-a-Service vs Imperva Web Application Firewall comparison

 

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

Fortinet FortiWeb Cloud WAF...
Ranking in Web Application Firewall (WAF)
26th
Average Rating
9.0
Reviews Sentiment
8.7
Number of Reviews
4
Ranking in other categories
No ranking in other categories
Imperva Web Application Fir...
Ranking in Web Application Firewall (WAF)
7th
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the Web Application Firewall (WAF) category, the mindshare of Fortinet FortiWeb Cloud WAF-as-a-Service is 0.6%, up from 0.1% compared to the previous year. The mindshare of Imperva Web Application Firewall is 5.8%, down from 6.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF)
 

Featured Reviews

Lilian Blaitt - PeerSpot reviewer
Efficiently identifies and addresses vulnerabilities while providing robust protection
It is a secure tool. It is user-friendly and easy to work with. It is possible to easily find vulnerabilities with the WAF. I understand that the return is good since I haven't had any significant attacks. The vulnerabilities I found were easy to close. I think the return is good. It is a good tool.
Mitesh D Patel - PeerSpot reviewer
Effectively defends against threats like cross-site scripting (XSS), SQL injection, and others
It does bring value. For example, consider a BFSI customer. Their application is critical and represents their brand. Without a WAF, an attack could take their application down, harming their reputation. It leads to hampering the customer's workflow. With an Imperva WAF, they protect against attacks like DDoS or SQL injection, ensuring their application remains available and customers are happy. That's the main benefit for both the customer and the organization. The impact depends on the customer's use case. If their business primarily operates online, a CDN is beneficial for traffic optimization. Moreover, the integration options depend on the specific use case of our customers. Generally, integration capabilities are good with SIEM (Security Information and Event Management) parts.

Quotes from Members

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

Pros

"The company provides technical support, and they are mostly available 24/7."
"The technical support is really good."
"The stability of the solution is excellent."
"I rate the overall solution ten out of ten."
"It is a secure tool."
"It is user-friendly and easy to work with."
"Fortinet FortiWeb offers a variety of protections, including machine learning that helps protect web applications."
"Configuration for different application sources is most valuable. We can segregate the traffic that an application is carrying and identify the sizing in Imperva."
"It has fewer false positives"
"The tool's profiling feature maps all the web application directories and related components on the profile directory. It has improved the security of my client's website applications."
"Data masking is the most valuable feature of this solution."
"Imperva is easy to use and deploy. The UI is excellent."
"There is a quick switch between any of the the nodes if something goes wrong, where there's a there's an attack against a specific area. The security setup is reasonably easy. It's not a problem to do setups and rules and integrations. And, yeah, just the the back end team is also very willing to insist if there's questions that that we cannot answer or with these questions that we do have"
"The most valuable feature of Imperva, in addition to its strong knowledge base, is its effective protection for web applications."
"The WAF itself has been very valuable to me because it has such a complete range of features. Another reason why I like it is because it also takes care of the total overview of the traffic over the network."
 

Cons

"The usability of the interface could be improved as it is not user-friendly."
"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."
"I do not have any notes on improvement."
"The Imperva Web Application Firewall automations are good, but there is still room for improvement with them."
"The product's customization capabilities are a bit problematic, requiring support cases for backend modifications."
"I think that better bot protection is needed in this solution."
"Imperva Web Application Firewall can improve by adding more features to the dashboard. increasing the visibility of the real-time events, besides configuring the administration itself."
"In the past, I have bugs on the WAF. I've contacted Imperva about them. Future releases should be less buggy."
"Imperva Web Application Firewall could improve the API integration. It was complex for us. Additionally, The onboarding could be better."
"I would like to improve the tool's turnaround time in terms of support."
"It would be useful if the solution used more intelligence in attack protection. For example, firewalls are to be dependent on the configuration, but if they could have some data science around it the solution would be even better. The profiling of the traffic, and making decisions surrounding that should be intelligence-based, instead of being based on the configuration of the firewall itself."
 

Pricing and Cost Advice

Information not available
"The price of Imperva Web Application Firewalls is expensive compared to others."
"The solution's pricing is an issue."
"Imperva Web Application Firewall's pricing is expensive."
"Imperva Web Application Firewall is expensive."
"There are a couple of different licensing models."
"It is very costly, but the return on investment is very high. Its cost was around $70,000, and we got it back in just six months."
"The pricing is somewhat expensive. It is actually a huge investment when compared to other countries."
"The tool is expensive."
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Top Industries

By visitors reading reviews
No data available
Financial Services Firm
16%
Computer Software Company
12%
Insurance Company
8%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Fortinet FortiWeb Cloud WAF-as-a-Service?
The price is not the cheapest, but it offers great value for money. I would rate it as an eight out of ten for pricing.
What needs improvement with Fortinet FortiWeb Cloud WAF-as-a-Service?
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. Enhancements to the X header forwar...
What is your primary use case for Fortinet FortiWeb Cloud WAF-as-a-Service?
We use Fortinet FortiWeb Cloud WAF-as-a-Service situated in front of our web-facing APIs. This includes everything that is customer-facing, business-to-business APIs, and things like that.
Is Citrix ADC (formerly Netscaler) the best ADC to use and if not why?
For ADC, any ADC can do a good job. But in case if you want to add WAF functionality to the same ADC hardware you have to look for other ADC's like F5, Imperva, Radware, Fortinet, etc.
DDoS solutions: Any other solutions to consider aside from Radware DDoS Protection Service and F5 Silverline DDoS Protection?
You can have a look to Imperva Cloud WAF, the anti-DDoS mitigation is under 1s and works very well. I observed a lot of DDoS attacks that were well managed (even not seen by the customer) by Imperv...
 

Overview

 

Sample Customers

Information Not Available
BlueCross BlueShield, eHarmony, EMF Broadcasting, GE Healthcare, Metro Bank, The Motley Fool, Siemens
Find out what your peers are saying about Fortinet FortiWeb Cloud WAF-as-a-Service vs. Imperva Web Application Firewall and other solutions. Updated: June 2025.
859,129 professionals have used our research since 2012.