Web Application Firewall (WAF) Definition
A Web Application Firewall (WAF) is a web application security solution intended to protect internet applications that use HTTP to send and receive information between client and a web-server. WAFs are designed to spot illegitimate requests that seek to exploit security weaknesses in a web application.
WAFs detect and filter potentially malicious traffic using a set of rules or machine-learning algorithms. By using a Web Application Firewall in front of a web application, a shield is placed between the web application and the internet.
WAFs have become vulnerable to the sophisticated bots that have surfaced in recent years.
Types of Cyberattacks a WAF is Designed to Stop
- Malware
- Zero-day Attacks
- SQL Injection Attacks
- Defacements
- Cross-Site Scripting (XSS) Attacks
- DDoS Attacks
- Business Logic Attacks
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