Microsoft Security Blue Hat Challenge

I know I have a few contacts on G+ that would be interested in this (for the XBox Avatars if for nothing else):

"The BlueHat Challenge is a series of computer security problems of increasing difficulty to help you build and test your skills in three areas: reverse engineering, vulnerability discovery, and web browser manipulation attack concepts."

http://blogs.technet.com/b/srd/archive/2013/07/31/the-bluehat-challenge.aspx