A Web Application Firewall (WAF) is a security solution designed to monitor, filter, and control HTTP and HTTPS traffic between web applications and the internet. Its primary function is to detect and block malicious traffic targeting web applications, such as injection attacks, cross-site scripting, and other vulnerabilities commonly exploited in the application layer. Core capabilities of WAFs include real-time traffic inspection, customizable rule sets, virtual patching, and protection against common web application threats as defined by frameworks like the OWASP Top Ten. WAFs may operate in either inline or out-of-band modes and can be deployed as hardware appliances, virtual appliances, or cloud-based services. They often provide logging, alerting, and reporting features to support incident response and compliance requirements. WAFs are typically used by organizations that host public-facing web applications, including enterprises, e-commerce platforms, and service providers. Security teams and IT administrators deploy WAFs to reduce the risk of data breaches, service disruptions, and compliance violations associated with web application vulnerabilities. Unlike traditional network firewalls, which focus on network-layer threats, or intrusion prevention systems (IPS), which address a broader range of attack vectors, WAFs specialize in application-layer protection. Cyberin offers a platform for discovering and comparing Web Application Firewall solutions to support informed decision-making.