Many people know enough to factory reset their Android os phone before offering it, but few probably realize their dirty secrets that are little nude selfies may nevertheless be lurking there.
Avast purchased 20 previously-owned Android smartphones from eBay; each had been “wiped” according to the manufacturer’s factory reset directions, but simply by making use of off-the-shelf digital software that is forensic as FTK Imager, Avast recovered “more than 40,000 personal pictures, email messages, texting, and – in some cases – the identities associated with vendors.”