Well there was a program out there called the chain or something like that a while ago. My best advice to you is to get a firewall because just getting one little ******* isn't going to stop them. Most of the people that will attack your home computer are ignorant little script kiddies and some will come back with a vengence. I know because I used to be one regrettably. The best solution is just to get a firewall and an up to date virus scanner.