On 18/08/15 13:50, Fraser McGlinn wrote:
On 17/08/15 21:30, Helmut Walle wrote:
And yes, for wiping disks something like
dd if=/dev/zero of=/dev/sdx
does the job (obviously replacing 'x' with the letter for the drive
to be wiped). Without any further arguments, this will eventually
fill the disk and terminate when running out of space. You can give
is a block size "bs=..." and count=... to exactly fill the disk.
I definately agree with Criggie on this - You need to be a bit more
diligent in wiping your data. I prefer DBAN as well. If its an old
drive such as a PATA drive which will have no foreseeable use, i'd
probably demantile it and use the platters as coasters too. Also to
grab the magnets as a fiddle toy.
We should be taking data security seriously since even stuff such as
SSH private keys, SSL private keys, DNS DNSSEC keys etc, are
definitely sensitive and can be used for years without rolling them to
new ones.
But at the end of the day, each to their own. I can't force others to
take data security seriously.
[...]
Absolutely - as you are pointing out there should be some sense of
proportionality between the risk on the one side and the security
efforts or cost on the other. If the disk only was used for storing
movies then no wiping may be needed, because it may only be the thief's
problem if they steal the content, while it may not affect the previous
owner of the disk at all. But if the disk was used to store customer
data that are subject to privacy concerns then the disk should probably
be destroyed physically, because that is not only a reliable and secure
method, but more so because it is ostensibly so... And it doesn't
require any specific wiping software.
Kind regards,
Helmut.
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