ModSecurity

ModSecurity is an open-source web application firewall designed to protect websites from various online threats and attacks, such as SQL injection and cross-site scripting. It works by monitoring incoming traffic to a web server, analyzing requests for harmful patterns, and blocking or filtering out potential threats. By implementing security rules, ModSecurity helps safeguard sensitive data and ensures that web applications operate safely, thus enhancing the overall security of a website while maintaining its functionality. It can be integrated with different web servers, making it a versatile tool for developers and system administrators.