mod_security

What is mod_security?

From the modsecurity website (external link) (cache): "ModSecurity is an open source intrusion detection and prevention engine for web applications (or a web application firewall). Operating as an Apache Web server module or standalone, the purpose of ModSecurity is to increase web application security, protecting web applications from known and unknown attacks." modsecurity was written by Ivan Ristic of Thinking Stone Ltd. The GotRoot? modsecurity rules are written and maintained by Michael Shinn, of Prometheus Group (external link).