Be alert and walk purposefully.
Confidence deters attackers.
Avoid lonely or gloomy places, especially at night - walk with a friend, a Security Unisafe escort or stay with a crowd. Be wary of strangers, on foot or in cars, asking directions - it's better to be rude than to be in trouble. If someone follows you, go to a place where there are other people. Respect you intuition. Take a seld-defence course.