Jeremiah Grossman's "Hack Yourself First"

Jeremiah Grossman's RSA Conference Talk this year was an extended version of his TEDx talk from a few weeks earlier. While his RSA talk is not available on the web (as far as I can see), his TEDx talk is. It is centred around the concept that hacking (or breaking) into your own systems, regularly is going to be one of the most effective means of understanding the system vulnerabilities than relying on defence mechanisms only.