WARNING: Factory Resetting your Android may leave private data on your device

android-factory-reset-broken

It’s never fun to have to issue a warning, but a new study by the LA Times indicates that the Factory Reset function on Android devices may not work as advertised. The site worked with a security expert to run a test on BlackBerry, Android, and iOS devices as well as PCs. It discovered that important, sensitive data could be retrieved on a large portion of Android devices even after the Factory Reset feature had been properly used. 

Robert Siciliano, an identity theft expert from McAfee performed the experiment, where he purchased 30 used devices (mostly smartphones and laptops) from random users on Craigslist. His goal was to see how smart people were about removing their personal information from phones, but as it turns out, even though a majority of owners did correctly Factory Reset their Android devices, he was still able to retrieve vital data like “Social Security numbers, child support documents, credit card account log-ins, and a host of other personal data.” This finding is all the more disturbing since he could find no problems with the way iPhones, iPads, or BlackBerry devices delete their data. The only other weak link was Windows XP, which is so old it’s almost expected. 

We’ve reached out to Google’s Android team to try and learn more about this potential vulnerability, but have not heard back as of publication. We’ll update this article if and when we get some answers. 

Until we learn more, we don’t recommend that you don’t sell your used Android devices to anyone that you don’t know or trust. It’s quite possible that personal information could be leaked from it. 

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