Imperva WAF alternative

7 Imperva WAF Alternatives That You Should Consider

A web application firewall is your ultimate defence against web attacks.

According to Cybersecurity Ventures, online security spending will cross $1 trillion in the next five years. Looking at the cost of data breaches and rise in malware and web vulnerabilities, the estimate does not seem exaggerated.

data breach

Today, a WAF vendor is an obvious choice for most online businesses. The benefits/ROI are clear:

  • Instant protection from vulnerability exploitation
  • Real-time traffic tracking
  • Custom rules to secure complex security issues
  • Cloud deployment for cost efficiency

While Imperva WAF is one of the popular choices, business should also consider next-gen alternatives that offer a lot of other features at considerably lower costs. Here are the top seven chosen by our security analyst team.


If you are looking for cloud options and manage the infra through Amazon, it does not get any better. AWS WAF helps you protect web assets from all common exploits within the cloud infrastructure. Of course, just like other AWS services, you pay for only what you use.


Given that security is available right on the same platform and within the same interface as your cloud infra, we think that AWS is the top Imperva WAF alternative.

  • Protection from OWASP vulnerabilities
  • Configured on the AWS Management Console
  • Works with CloudFront or the Application Load Balancer
  • Pay as you use model
Most prominent feature: Ease of Use

3 CloudFlare

CloudFlare WAF is often touted as one of the best protection tools in the industry. With features like automatic WAF updates, collective rule intelligence, and zero-day coverage, it’s a worth Imperva competitor.


CloudFlare’s WAF business is relatively new but they are working hard to ensure that the services are top notch. There is a free version of the product for smaller sites.

  • OWASP Top 10 coverage
  • Collective threat intelligence
  • 5-minute deployment
  • Automatic WAF updates
Most prominent feature: Popular across AWS, Azure and Google Cloud.

4 Sucuri

A super popular WordPress security product, Sucuri WAF is offering a lot more than what it initially intended. The product boasts about filtering all traffic (HTTP/HTTPS) while also enhancing speed of any website.

It is a worthy Imperva WAF alternative for instant hacker blocking and DDoS prevention along with smart caching to boost performance.

  • OWASP Top 10 protection
  • Zero-Day vulnerability protection
  • Caching
  • GZIP Compression
Most prominent feature: WAF with speed boost

5 Alibaba WAF

In an age where every other cloud provider is coming up with their own security, we raise you the Alibaba WAF. While the technology is still in early phases, we found it to be better than IBM and Azure options.

This WAF protects your website from common exploitations and bots. However, we couldn’t get hold of the custom rules.

  • Blocks SQL injections, XSS, Malicious BOT and command execution vulnerabilities
  • Complete cloud deployment
  • 1,000 protection rules
  • 0-day web vulnerability patches
Most prominent feature: Real-time traffic metrics

6 SiteLock

SiteLock WAF is not the best alternative to Imperva WAF but it has a lot of desirable features. It offers protection from common exploitation attempts like SQL Injection, Security Misconfig, XSS, and CSRF.

Apart from OWASP Top 10 protection, it also has options to secure website content and to block comment spam. As for the efficiency of this WAF, we’d like to see some action from the company on how it responds to customer queries.

  • OWASP Top 10 protection
  • Content security
  • Spam comment blocking
  • Quick setup
Most prominent feature: Site content security

7 StackPath

StackPath WAF is one of the better next-gen security tools that we’ve tested so far. Although the company is more focussed on automated bot-based attacks, it’s quite efficient. It integrates browser validation, IP reputation engine, and bot detection to stop automated attacks.

StackPath is a perfect WAF for mini businesses that do not want to spend a lot on security. The basic plan starting at $10 a month can be integrated with CDN, monitoring, and/or managed DNS. However, if you’re willing to spend $200 to $2000 a month, we’d recommend other options on the list.

  • Flexible deployment- cloud or third-party
  • Real-time rules
  • Bot protection
  • Custom rules
Most prominent feature: Automated attack protection

If you have any other suggestions for the options in place of Imperva’s WAF, we’d love to read them in the comments section below.


Ishan Mathur

From stopping hackers to getting the fastest CDN, I'm helping big and small companies choose what's best for them by building a community here.

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