Crooks don't like to strike where eyewitnesses can provide the police with a detailed account. Leave your purse at home if possible. If you must carry one, hold it firmly, close to your body. Pursesnatchers prefer to grab from behind. If you walk or jog, especially at night, consider getting a dog that can accompany you on a leash.
Criminal offenders relate that a dog is one of the most effective crime deterrents.
If you work late hours, arrange to leave at the same time as a co-worker. Try to avoid parking far away from your work site. Be aware of your surroundings at all times by making eye contact with passersby and glancing occasionally behind you. If you sense that you are being followed, change direction or cross the street. If the person persists, run to the nearest place where you'll find people.