Copiers aren’t just security threats during their time at the office; they’re also a potential threat even when they’re sold to a third party.
Your copier is hiding something from you – its hard drive.
Copiers with these “hidden” hard drives have been prevalent since 2002 and they store images of every document that has ever been copied, scanned, or emailed. This data remains stored on the hard drive until the drive becomes full then the old data is overwritten, but there’s always the potential for sensitive information to be stored on your copier’s hard drive.