Pwning a Linux box for fun and profit
I've spent the last few weeks participating in the SecureSet War Games Denver, and it's been a lot of fun. The sessions are a mix of security lectures and hands on activities, with a few CTF type events thrown in there. We recently did a CTF game for gaining root access on a remote Linux VM, where we would need to identify and exploit weaknesses in the system as fast as possible. The winner would get a Sphero Ollie.