On Tue, 29 Jan 2019 at 03:32, Robert Nichols <rnicholsNOSPAM@xxxxxxxxxxx> wrote: > > On 1/28/19 8:03 AM, Ian Malone wrote: > >I wouldn't recommend just doing /dev/zero if the CIA, > > or even a moderately funded newspaper might specifically be after your > > data, > > I would be interested to know if you can name any data recovery service that has ever demonstrated the ability to recover data from a reasonably modern hard disk that has been overwritten once with zeros. > I can't. This doesn't mean nobody can do it though, and of the possible cases it's the most simple to retrieve the data from, which there is a theoretical possibility of. It's also not a case with that many legitimate uses. Given the additional cost of using at least a single randomised over-write is effectively zero there's basically no reason not to take that option instead. SSD may also simply ignore a zero write and mark blocks as unused instead, though as jdow mentioned the wear-levelling areas can escape an over-write anyway, which is why the ATA secure erase command exists. -- imalone http://ibmalone.blogspot.co.uk _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
