Safety experts said the big thing to keep in mind is to do as much as you can to avoid a confrontation.
Try to talk to your attacker without provoking them. Stay relaxed and remember that body language is important in aggressive situations, so maintain a comfortable distance between you and the aggressor.
They also said you have the right to defend yourself with reasonable force and this includes using items you have with you such as an umbrella, bag, briefcase or keys.Once you have done that, get away as fast as you can. If you manage to overcome your attacker, do not attack again, you could be putting yourself in more danger or you could end up being charged with assault.
There are also things you can buy to give you a little piece of mind. Things like pepper or bear pray, stun guns, self defense key chains, and there are many books, videos and classes out there where you can learn simple self defense techniques.