Do not leave a key under a doormat or flower pot, or in the mailbox or the ignition of your parked car. Do not carry an identification tag with your address on your key chain. Leave only your ignition key with a parking attendant or repairman, as they could make a copy of your home key. Lock doors at all times, even when home. Leave outside lights on at night and close your curtains.
Many rapes are crimes of opportunity.
A rapist spots and watches his victim through a lighted window. At night, when home alone, turn the lights on in several rooms to give the appearance that there are people in several rooms. Get to know your neighbors. This will make it easier to spot strangers. When leaving your apartment, look around the area outside the apartment before exiting.