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Atomic ModSecurity Rules vs Imperva Application Security Platform comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 22, 2026

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)
30th
Average Rating
9.0
Reviews Sentiment
7.8
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Imperva Application Securit...
Ranking in Web Application Firewall (WAF)
1st
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
148
Ranking in other categories
CDN (2nd), Distributed Denial-of-Service (DDoS) Protection (3rd), Bot Management (1st), API Security (1st)
 

Mindshare comparison

As of November 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 Imperva Application Security Platform is 7.2%, down from 7.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Imperva Application Security Platform7.2%
Atomic ModSecurity Rules0.8%
Other92.0%
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.
reviewer2818155 - PeerSpot reviewer
Senior Associate at a tech vendor with 10,001+ employees
Application protection has improved and reporting and dashboards still need refinement
I believe Imperva Application Security Platform should have a more interactive wizard. While the dashboard is good, it could be more eye-catching. Based on my perspective, I recommend modifying the dashboards, especially the main dashboard where I can see the traffic hit count, alerts, and other latest information. In terms of reporting, I find it challenging to create reports; in my earlier days, it was difficult. Over time, I have learned how to create reports, but it should be easier to do so. I have used other tools such as firewalls or SolarWinds, where creating a report is straightforward and does not take much time, unlike in Imperva, where I have to add many elements. Modifications in the integration aspects would also be beneficial.

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."
"Scalability has been pretty good, our European traffic has doubled and our sales have gone up along with our stability."
"I suggest others looking into using Imperva Application Security Platform consider it as the best solution."
"It fits our requirements, as well as our budget."
"The solution can be configured in just a couple of minutes."
"The most valuable features of Imperva Web Application Firewall are the monitoring of databases and the dashboards are easy to understand."
"Basic setup is simple but, as with any caching/WAF setup, there are tricks you need to learn, but it works really nice out of the box!"
"Imperva Application Security Platform has helped reduce incidents, save time, and improve my organization's security posture with specific measurable outcomes and metrics."
"On the real time, you can see live traffic, which is flowing into our website."
 

Cons

"Additionally, I know that ModSecurity can block only SQL injection and XSS attacks, no more types of attacks."
"The only disadvantage of Imperva is that it is a pretty costly solution."
"Although we're only using it for the accelerator part, the purging of files and the way this feature functions could use improvement."
"We faced issues regarding compliance with client procedures. The client had strict compliance rules, and Imperva needed to be on a VM, while the client required containerization, causing a conflict. They went with Imperva for the on-premise version but shelved the cloud project due to too many blockers."
"I loved the approach of the cloud. The cloud has a lot of new features, like advanced web protection and DDoS protection. If those could also be on-boarded onto the on-prem versions, that would be ideal. They need to pay attention to both deployment options and not just favor one."
"In the past, I have had bugs on the WAF."
"Its price could be improved. It is quite expensive."
"On the negative side, API security mainly supports cloud-based solutions, while most of my customers prefer on-prem setups, so achieving high performance with on-prem solutions would be beneficial."
"The interface seems a bit outdated and simplistic."
 

Pricing and Cost Advice

Information not available
"It is a very expensive solution. The price is very high. A lot of customers tell us that they would love to use Imperva more. I have some customers who have 50 websites, but they have only 10 websites on Imperva because of the price. They would love to have all their websites running through Imperva, but they can't. They have to choose the more critical websites to protect because the price is very high. It is a very good product, but it is too expensive. If you buy a plan for 20 megabytes and you don't consume all of your 20 megabytes, it is okay, but if you consume more, you are charged for the superior traffic."
"Varies depending on the needs of the customer."
"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 cost is somewhere around $10,000 a site. For every site, you pay individually. For every DNS entry, you have you pay."
"The price is high compared to other solutions like FortiWeb."
"The solution's price is high for small companies."
"Imperva Web Application Firewall is expensive."
"Imperva’s pricing is a bit higher in the market since it offers a full-blown WAF."
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Top Industries

By visitors reading reviews
Comms Service Provider
29%
Hospitality Company
13%
Manufacturing Company
11%
Construction Company
9%
Outsourcing Company
13%
Financial Services Firm
11%
Manufacturing Company
8%
Construction Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business88
Midsize Enterprise25
Large Enterprise71
 

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...
Which Web Application Firewall (WAF) would you recommend? R&S or Imperva?
Imperva is a strong choice, given their security focus and ongoing R&D into the product in areas such as bot management.
What is your experience regarding pricing and costs for Imperva DDoS?
The pricing, setup costs, and licensing of Imperva DDoS are reasonable for the amount of technical capabilities provided. I would rate the pricing of Imperva DDoS as five, where one is very cheap a...
What needs improvement with Imperva DDoS?
I would like to see improvements in the pooling of threats and attacks, possibly to enlarge the scale of indicators of compromise. For example, the initiation of an attack on the endpoint level cou...
 

Also Known As

No data available
Imperva Bot Management, Imperva Web Application Firewall, Imperva API Security
 

Overview

 

Sample Customers

Information Not Available
Hitachi, BNZ, Bitstamp, Moz, InnoGames, BTCChina, Wix, LivePerson, Zillow and more.
Find out what your peers are saying about Imperva, Radware, F5 and others in Web Application Firewall (WAF). Updated: October 2026.
920,769 professionals have used our research since 2012.