Privacy and smartphone apps: What data your phone may be giving away (CBC Marketplace)

2 Factor Authentication To Protect Yourself  

By  using that  best  steps you can stop attacking from getting into your accounts with  Google,  Facebook, Twitter and other services is to setup two-factor authentication. Each time you attempt to log in to an account protected by two-factor authentication from a new phone or computer, you'll be asked for the password you know, but also an additional, temporary password that you don't (that's the second factor).