Did you buy a new phone? Don't just throw your old one out, there may be sensitive data on it. Fox Van Allen's article, "Study: Wiping Your Android Phone Doesn't Erase All Your Data" details a new study from security firm AVAST. They purchased 20 used Android smartphones and found that “From just 20 phones, we found over 40,000 pieces of very personal information,” But don't worry, there are apps that can clean your phone for you. Allen lists a couple of them in his article. You can read about them here.