My husband is computer nerd, he does everything to fix them and knows what porn sites are ones to use. Also he knows what sites; by looking at bug names; what site they come from. He spent a lot of time learning these things. Fist thing my old man does is remove Norton, he installs spybot and microsoft security essentials; these are free at download.com; if you do want to take out Norton you have to do this with a program called simnert( not sure on spelling). These Antivirus softwares work great! Also never use internet explorer, download firefox this one has more security. I'll Have to get back to you about the safe porn site my hubby knows, who ever runs that website scans his porn daily and if you find a bug from his site you email him and he will get raid of it. These antivirus softwares will let you know when you are entering dangerous site and warn you also, you can scan the downloads before downloading them. Good luck...