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The Fastly Next-Gen WAF (powered by Signal Sciences) vs Wallarm NG WAF comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 1, 2025

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

The Fastly Next-Gen WAF (po...
Ranking in Web Application Firewall (WAF)
27th
Average Rating
7.6
Reviews Sentiment
7.1
Number of Reviews
3
Ranking in other categories
No ranking in other categories
Wallarm NG WAF
Ranking in Web Application Firewall (WAF)
38th
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
5
Ranking in other categories
API Security (13th)
 

Mindshare comparison

As of June 2025, in the Web Application Firewall (WAF) category, the mindshare of The Fastly Next-Gen WAF (powered by Signal Sciences) is 1.0%, up from 0.7% compared to the previous year. The mindshare of Wallarm NG WAF is 0.5%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF)
 

Featured Reviews

Archana Heeralal - PeerSpot reviewer
A good solution to implement web application firewall for applications
There are some lags in Signal Sciences for the web application firewalls. Even if we create some custom rules, Signal Sciences cannot capture some of the malicious traffic. There is a little bit of complexity with custom rules that should be removed. Signal Sciences should add a feature called rate limiting with multiple options, wherein I can create a rate limiting based on the cookie request or the IP.
it_user796242 - PeerSpot reviewer
Helps us to monitor attacks to our sites and prevents a lot of them
Set up Wallarm as a reverse proxy. Do not replace your web server. Use Wallarm first in monitoring mode, then learn from Wallarm which type of request is false positive and which type of request is not. This process takes a couple of weeks for very highly-loaded web applications (few millions of unique visitors in one month). Then you can turn Wallarm into blocking mode and everything will be fine. Do not forget to build a monitoring system, the wave, and API for it. Before we started using Wallarm, I already knew Ivan (CEO) and Stepan (COO) from a couple of years before. Ivan had his own security company and Stepan was working on a Russian security magazine called Xakep. They told us that they wanted to create a new WAF and already had a working version of it. They asked me to test it. We did tests, and it was really good. After few month after testing, we signed an agreement. Our choice was made not because we knew these guys for a long time, but because the product was really cool and we were glad to start using it as one of the first on the market!

Quotes from Members

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

Pros

"Fastly (Signal Sciences) integrates and tags the intermittent traffic based on patterns. It generates signals and provides them in a dashboard where we can view them and decide whether to allow or deny traffic. It's a more advanced and easy-to-navigate dashboard."
"The product's most valuable feature is its ability to set up the rules easily."
"When configuring a web application firewall using Signal Sciences, we configure a rule whereby no one except a few people can access the application."
"Helps us to monitor situation in regards to attacks to our sites and prevents a lot of them."
 

Cons

"Even if we create some custom rules, Signal Sciences cannot capture some of the malicious traffic."
"The areas that could be improved in Signal Sciences include the effectiveness of rules, as many didn't function optimally and required custom rule-writing to address bypasses for WAF."
"Fastly don't support caching for China users. That's the only feature lacking compared to Akamai."
"The biggest problem for us was the stability and speed using the first version of Wallarm. Now, it is fine."
 

Pricing and Cost Advice

"The pricing is 50% less than Akamai."
"The product has an affordable cost."
"Signal Sciences is pretty cheap compared to other solutions."
"​Pricing must be cheaper than the competition and the licensing must be good.​"
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Top Industries

By visitors reading reviews
Computer Software Company
12%
Manufacturing Company
11%
Educational Organization
11%
Financial Services Firm
10%
Computer Software Company
15%
Insurance Company
14%
Government
13%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

What do you like most about Signal Sciences?
The product's most valuable feature is its ability to set up the rules easily.
What needs improvement with Signal Sciences?
Fastly don't support caching for China users. That's the only feature lacking compared to Akamai.
Ask a question
Earn 20 points
 

Also Known As

Signal Sciences Next-Gen WAF, Signal Sciences RASP
Wallarm NG-WAF
 

Overview

 

Sample Customers

Chef, Adobe, Datadog, Etsy, GrubHub, Vimeo, SendGrid, Under Armour, Duo, AppNexus
Panasonic. Miro. Rappi. Wargaming. Gannett. Omio. Acronis. Workforce Software. Tipalti. SEMRush.
Find out what your peers are saying about The Fastly Next-Gen WAF (powered by Signal Sciences) vs. Wallarm NG WAF and other solutions. Updated: June 2025.
859,129 professionals have used our research since 2012.