Does Factory Resetting your phone delete all your data forever? NOPE.

android-factory-reset-640x360   An estimated 500 million Android phones don’t completely wipe data when their factory reset option is run, a weakness that may allow the recovery of login credentials, text messages, e-mails, and contacts, say Cambridge University after producing a report on the recovery of previous data after a reset. (you can download the report here).   Wow! And they even let us have a look at what they can do with the data and where to find it! what a gem. android-data-recovery “After the reboot, the phone successfully re-synchronised contacts, emails, and so on,” they reported. “We recovered Google tokens in all devices with flawed Factory Reset, and the master token 80% of the time. Tokens for other apps such as Facebook can be recovered similarly. We stress that we have never attempted to use those tokens to access anyone’s account.” Read more: http://arstechnica.com/security/2015/05/flawed-android-factory-reset-leaves-crypto-and-login-keys-ripe-for-picking/ Cambridge University PDF report: http://www.cl.cam.ac.uk/~rja14/Papers/fr_most15.pdf