Try our new research platform with insights from 80,000+ expert users

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)
25th
Average Rating
7.6
Reviews Sentiment
4.8
Number of Reviews
4
Ranking in other categories
No ranking in other categories
Wallarm NG WAF
Ranking in Web Application Firewall (WAF)
39th
Average Rating
8.6
Reviews Sentiment
6.8
Number of Reviews
5
Ranking in other categories
API Security (12th)
 

Mindshare comparison

As of February 2026, in the Web Application Firewall (WAF) category, the mindshare of The Fastly Next-Gen WAF (powered by Signal Sciences) is 1.2%, up from 0.8% compared to the previous year. The mindshare of Wallarm NG WAF is 0.8%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Market Share Distribution
ProductMarket Share (%)
The Fastly Next-Gen WAF (powered by Signal Sciences)1.2%
Wallarm NG WAF0.8%
Other98.0%
Web Application Firewall (WAF)
 

Featured Reviews

reviewer2161107 - PeerSpot reviewer
Staff Engineer at a retailer with 1,001-5,000 employees
Room for improvement with user interface while competitive pricing impresses
It is managed through Infrastructure as Code, so all configurations can be managed in the code itself, which is beneficial. Because it uses rules, it is easy to set up, and we have many different sites where the configurations are straightforward. Though the UI is not very interactive, which is a downside, we can manage many things. The UI is not very intuitive and could be better. However, we manage all the configurations through code, which is easy to maintain. It has extensive anomaly detection capabilities, so the traffic is classified into several categories where thresholds can be defined and customized based on false positives and false negatives. This is advantageous because you do not need to tweak it very often. Once you set it up, an audit once a quarter would suffice. Because The Fastly Next-Gen WAF (powered by Signal Sciences) is API-driven, we have integrations with the CI/CD pipeline through GitHub Actions, making it easy to integrate.
it_user796242 - PeerSpot reviewer
Information Security Engineer at a tech vendor with 51-200 employees
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

"When configuring a web application firewall using Signal Sciences, we configure a rule whereby no one except a few people can access the application."
"Because The Fastly Next-Gen WAF (powered by Signal Sciences) is API-driven, we have integrations with the CI/CD pipeline through GitHub Actions, making it easy to integrate."
"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."
"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 UI is not very intuitive and could be better."
"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.​"
report
Use our free recommendation engine to learn which Web Application Firewall (WAF) solutions are best for your needs.
881,821 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Manufacturing Company
13%
Retailer
11%
Financial Services Firm
9%
Computer Software Company
9%
Government
13%
Manufacturing Company
11%
Financial Services Firm
10%
Computer Software Company
10%
 

Company Size

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

Questions from the Community

What is your experience regarding pricing and costs for Signal Sciences?
The pricing is very competitive compared to other providers. The pricing is definitely a factor in our decision-making process.
What needs improvement with Signal Sciences?
We do use it, but the UI can be improved as we mostly work through the CI/CD. It provides support, but sometimes it is hard to navigate unless you are very familiar with it.
What is your primary use case for Signal Sciences?
The CDN is for caching and The Fastly Next-Gen WAF (powered by Signal Sciences) is for protecting the servers from malicious traffic. They both perform different jobs and serve different purposes, ...
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: February 2026.
881,821 professionals have used our research since 2012.