It’s not bad enough thieves are grabbing iPads from shoppers hands, scammers are also using the popularity of Apple’s new mobile computing device to fool people into revealing personal data or exposing their computers to viruses and other malware. So watch out for email messages that claim you need to follow their instructions in upgrading your iPad’s software — something Apple would not send. Also watch for ads claiming you can get a free iPad for filling out a profile. While some might be legitimate, most probably are not.