Belly, I doubt you're going to get abducted. XD
If you're home alond and are afraid because of abduction, keep a phone near you as well as weapon like object like a knife for protection. If somehting happens, call your parents to alert them, if truley scared ask them to come home(I've done it... >.>), call the neighbours if adults and ask to check outside(If anyone's out there), then call a friend so if anything happens, they'll know and will call emergancy. It's also good if you have a cellphone so if you call a friend and are on the line with them and your parents try to call you on the same like, it won't be good. Keep the windows, and doors locked and stay away from any entrances, no duh.
If you're just walking down the street or something, it's always safe to have a cellphone. It's good to walk with someone if you're walking home let's say. If you're alone and someone's following you, pick up your phone and call someone. It's unlikely someone will 'nab' you if you're on the line with someone.
Also, if you don't have a cellphone, talk to your parents. They are really handy, even if they're for emergancies. Trust me, on the first day of school this year I had to walk to a school(I walk from my school to another and wait there for an hour for my dad to pick me up) and he called me on my new cell which I got a day before. Turns out he had a flat tire so if I hadn't known that and he didn't call, I'd be stuck there for two extra hours.
Also somehting like that happened to me so... I was home alone, a long time ago, and someone rang the doorbell as well as the dogs were frantically barking. I was so scared. I asked my dad to come home(He was at a friend's for a game and couldn't find his keys in the rush so he had to use his friend's car XD) and what not. Plus it was eleven at night. Turns out it was just an old man down the street looking for the owner of a garbage can... XD
So don't worry and even if you don't have a cellphone, I doubt anyone will steal you. X3