Every time you turn on a computer, open an e-mail, surf the Web, go on Facebook or use a wireless network (not just at Starbuck's or at the airport) you are a potential target for scam artists, identity thieves, computer hijackers and worse. Learn the do's and don'ts of safe computing, including basic computer and Internet settings, parental controls, security software and common e-mail threats. Learn how to recognize them and what to do.