I met different criminals in years of walking alone in midnight. They never succeeded in hurting me or taking one my things because I ensure that I always bring a safeguard. I have personal alarms hiding in a form of a key chain. This will surely attract attention when one is being pulled by a stranger. I also have a lipstick pepper spray, which I can spray directly to the face of an attacker. It will make him sightless for a moment. The best self-defense weapon that I have in my bag is stun gun. This is quicker to produce injury to the attacker and easier to use than mace sprays. See, I don't need to worry dealing with those criminals since I have weapons as well as can safe with me all the time.