⚡ Web Application Firewalls in Japan

Web Application Firewalls (WAF) are security solutions that inspect and filter incoming HTTP and HTTPS requests before they reach a web application.

Japan is an East Asian country with a population of around 125 million people.

According to our research, web application firewalls are detected on 1.1% of websites from Japan.

Statistics based on 201K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top WAF technologies in Japan in 2026, based on market share.

The most popular is F5 BIG-IP with a share of 24.8%, followed by Imperva WAF with 24.5% and Wordfence with 14.5%.

F5 BIG-IP 24.8%
Imperva WAF 24.5%
Wordfence 14.5%
Azure Application Gateway 14.5%
Azure Front Door 12.2%
SiteLock 3.5%
Ivanti vADC 2.6%
NetScaler 2%
Sucuri CloudProxy 1.4%
Oracle WAF 0.8%
AWS WAF Captcha 0.4%
Barracuda Load Balancer ADC 0.4%
All-In-One Security 0.4%
FortiWeb 0.2%
F5 Distributed Cloud 0.09%

🚀 Highlights

Here is a list of the top technologies that are more popular in Japan than worldwide.
Differences between global and country rankings are shown in parentheses.

1. F5 BIG-IP ^(-1)
2. Imperva WAF ^(-3)
4. Azure Application Gateway ^(-2)
6. SiteLock ^(-2)
8. NetScaler ^(-4)
10. Oracle WAF ^(-5)
16. Link11 ^(-1)

✨ Best WAF Technologies

Below is a more detailed list of 16 WAF technologies used on sites from Japan, ranked by their market share.

Rank	Name	Market share
1	F5 BIG-IP Seattle, Washington, United States An enterprise-grade application delivery controller and full reverse proxy platform for managing, securing, and optimizing web and API traffic. $3,200+/year	24.8%
2	Imperva WAF San Mateo, California, United States Imperva Cloud WAF protects websites from automated vulnerability scans, Layer 7 DDoS attacks, and malicious bots. $7,000+/year	24.5%
3	Wordfence Seattle, Washington, United States A WordPress security plugin that provides a web application firewall and malware scanner to protect websites from hacking attempts, malicious traffic, and vulnerable code. Free$149+/year	14.5%
4	Azure Application Gateway Redmond, Washington, United States A managed web traffic load balancer and full reverse proxy that enables scalable, highly available, and secure web application delivery on Azure. $0.0255+/hour	14.5%
5	Azure Front Door Redmond, Washington, United States A cloud content delivery network service that offers Layer 7 load-balancing capabilities. $35+/month	12.2%
6	SiteLock Scottsdale, Arizona, United States A cloud-based website security service that monitors websites and protects them from malware, vulnerabilities, and malicious traffic. $19.99+/month	3.5%
7	Ivanti vADC South Jordan, Utah, United States A software-based application delivery controller solution that delivers applications with predictable performance and strong multi-layered security and includes Virtual Traffic Manager, Services Director and Web Application Firewall. $$$	2.6%
8	NetScaler Fort Lauderdale, Florida, United States An application delivery and security platform that provides high-performance load balancing, application delivery, and security solutions. $11,000+/year	2%
9	Sucuri CloudProxy Tempe, Arizona, United States A website application firewall that stops bad actors, speeds up load times, and increases website availability.	1.4%
10	Oracle WAF Austin, Texas, United States A cloud-based, PCI-compliant, global security service that protects applications from malicious and unwanted internet traffic. $5+/month	0.8%
11	AWS WAF Captcha Seattle, Washington, United States A feature of the AWS Web Application Firewall that helps protect web applications by requiring requests that match specific criteria to solve a captcha puzzle or silent challenge before proceeding. $$$	0.4%
12	Barracuda Load Balancer ADC Campbell, California, United States A unified high-performance platform that helps organizations achieve their availability, acceleration, application control, and application security objectives. $7,000+/year	0.4%
⏳	All-In-One Security Newport, Wales, United Kingdom A WordPress security and firewall plugin that protects websites from hackers, bots, and other cyber threats. Free$44.50+/year	0.4%
⏳	FortiWeb Sunnyvale, California, United States A web application firewall that protects web applications and APIs from known and unknown exploits and zero-day threats. $3,400+	0.2%
⏳	F5 Distributed Cloud Seattle, Washington, United States A SaaS-based platform that provides security, networking, and application management services across multi-cloud, on-premises, and edge environments. $25,956+	0.09%
16	Link11 Frankfurt, Germany Offers a cloud-based security platform that includes web application firewall, distributed denial-of-service protection, bot management, and API security. €613+/month	0.04%

👉 See Also

🌎 WAF in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 201,355 websites from Japan.
We currently track the presence of 23 WAF technologies across the web.
Of these, 16 were detected on websites from Japan.
Statistics were last calculated on October 7, 2026.
For more details, see our methodology and disclaimer.