Is there a software that allows a selective content/downloads filtering on a PC with several user profiles? My older son keeps accessing and downloading (apparently) harmless clips from YouTube, problem is you never know what he may come across in there. I have just found 132 files infected with a trojan horse!!! Ideally I would like to stop him from accessing or downloading fron certain sites but reserve the freedom of access for other profiles on the same PC. All parental controls softwares I have come across so far seem to apply filtering parameters to all profiles, or maybe I am under a wrong impression?