Outdoor lights deter criminals who don't want to be seen. Lights with motion detectors are highly recommended. Indoor lights plugged into timers help created the illusion that you are home. Keep these trimmed to avoid giving criminals a hiding place. Also keep an area 6 inches below windows clear.
Plant bushes with thorns or spiked leaves beneath windows.
Be extremely cautious of any entryway where normal lighting is not on at night. Do not give your name and number as part of the recorded message and do not reveal any travel plans. Cell Phone- Consider keeping a cellular phone in your bedroom should your telephone line become inoperable. Calls- Hang up the phone and report such calls to the phone company and your local law enforcement agency. Give only your car keys to a mechanic or valet, not your house key.