The task of protecting a computer against third parties and privacy threats is endless. If you are concerned about the safety of your computer, it would be a good idea to wend your way to the StopBadware website.
Said site originated as a collaboration between academic institutions, technology industry major players and individuals that volunteered their services in order to protect both Internet and computer users from privacy threats. The site acts as a gathering point for those who wish to find community solutions when it comes to stopping badware. There is a comprehensive collection of articles that can be found therein, with topics ranging from information about badware to ways to ensure that your computer is fully protected. A clearinghouse for websites that are reported as potentially dangerous is featured, and webmasters can request the StopBadware staff to review their sites in order to establish that they are safe. 
