Bill (@sempf) is an application security architect who loves the grind of security. He recent spoke at DerbyCon on "Breaking android app for fun and profit." Watching the talk prompted me to invite Bill on the show to dive in a little more. What I like about the talk is that it's almost entirely a demo that walks through the steps of setting up the test environment. You can find more content from Bill at his website and the OWASP .NET project.