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Cybersecurity Glossary

Web Application Firewall (WAF)

A web application firewall (WAF) is a security device that protects web applications from a variety of attacks, including SQL injection, cross-site scripting (XSS), and distributed denial-of-service (DDoS) attacks.

A WAF sits between the web application and the internet, and it monitors and filters all traffic to and from the application. If the WAF detects any malicious traffic, it can block it before it reaches the web application..

WAFs are important because web applications are often targeted by attackers. Web applications are typically more complex and vulnerable than traditional websites, and they can contain sensitive data such as customer information or financial data. By protecting web applications from attacks, WAFs can help to keep organizations safe from data breaches and other security incidents.

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