If you see anything suspicious call the RA's, Security, or Campus Police immediately. Use the peep hole to see who is at your door before opening it. Never leave it unlocked even if you will only be down the hall. Don't let people into your section that you don't know. Do not display your phone number on your door.
Propped doors are a burglar's best friend.
Don't walk alone at night, or call safe walk at extension 6100.