1. Clocks's Avatar
    Flawed Android factory reset leaves crypto and login keys ripe for picking | Ars Technica

    TLDR:
    Data is easy to recover from previously used phones even after a factory reset. Even if your device was encrypted all that is needed is the encryption password to regain access even after a factory reset. A short password can be cracked in a few hours.

    The big takeaway is before you sell your phone:
    1) encrypt the device with a very long password (11+ characters) of letters and numbers
    2) then do a factory reset
    B. Diddy likes this.
    05-22-2015 10:01 AM
  2. B. Diddy's Avatar
    Thanks, good PSA. This whole issue is a big facepalm!

    It's worth pointing out that the study included only phones up to 4.3, so hopefully Kitkat and Lollipop are more secure.
    05-22-2015 11:04 AM

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