Enhance the defensive posture of an application by actively detecting attackers. Don't just wait for an attacker to find a weakness. Find the attacker first and shut them down.

The OWASP AppSensor project defines offers prescriptive guidance to implement intrusion detection and automated response into an existing application.

Check out AppSensor in action here - demo video

Or view the OWASP project page at http://www.owasp.org/index.php/Category:OWASP_AppSensor_Project