Women and girls:
A simple but effective technique to ward off an attacker is to grab the area just below the center of the lower lip. Squeeze as hard as you can with two or three fingers. It is EXTREMELY PAINFUL and will give you enough time to get away or call for help.
Try it on yourself.
@EdgeOErin
Also if your attacker has grabbed you, they are prepared for you to pull against them. Instead slam into and over them.