your system and do some research on additional tools at < http://www.epic.org/privacy/tools.html > that will support your online preferences. · Anti-virus ( http://en.wikipedia.org/wiki/Antivirus ) and firewall ( http://en.wikipedia.org/wiki/Firewall ) software are an absolute necessity. You might also want to consider other tools such as pop-up blockers ( http://en.wikipedia.org/wiki/Pop_up#Add-on_programs_that_block_pop-up_ads ) and anti-