It seems we've all done it. We've clicked on some video on Facebook and, just like that, our computers are infected with a virus. Or maybe, we've opened an e-mail that might as well have been called Pandora's Box and unleashed a world of evil on our hard drives. Any bored 20-something living in his grandmother's basement could infect our systems. But in recent years, Internet security has increased with a number of amazing programs that will put up a veritable armed fortress around our computers. Unfortunately, that hasn't left some hackers without options.