If you have a cell phone and use Gmail, Yahoo Mail, iCloud, Dropbox, Evernote, Facebook, Twitter and the websites of banks and countless other web services, you are at risk of being hacked, having your money stolen, having sensitive information exposed and being blackmailed. With just your phone number and a little bit of what’s called “social engineering” in which a hacker doesn’t necessarily need technical knowledge but just to convince a customer service rep that they are