Many people ask me how they can secure their home computer system. That is a very good question, and something that every computer owner should be concerned about. Many times I get called to a site, after a computer has been loaded by spyware and viruses and running very poorly or not at all. Much of this is preventable with three basic precautions: do you have updated antivirus software, do you have spyware protection, and do you have an active firewall.