seriously, you should always keep your bike locked up in your dorm... to your bed. i had two bikes jacked from me when i lived in the dorms. i kept one locked up on the bike rack outside, they broke the masterlock with something to get the bike. the other one that was stolen was locked up the common room of my floor, to a window frame. i have no idea how they took it, but it was gone one morning. these were just my beater bikes, but still dorms are really bad places for theft.