SSD?

[Liam Proven]

On Mon, 7 Mar 2022 at 21:17, <ubuntu at howorth.org.uk> wrote:
>
> Thanks for the warning. The backup has a separate power supply, so I
> think it would have to be a quite byzantine failure to send valid but
> erroneous commands to the drive to overwrite the drive.

It's not, at all.

There are at least 2 possible failure modes; one I've had, the other
I've cleaned up.

[1] A nasty OS crash that corrupts all mounted drives. This can be
horrible; I've had 7 or 8 partitions across 2-3 hard disks all wiped
at once.

A drive on the other end of a network cable is immune from this: the
failed computer's OS is not controlling the drive, the server is, and
at worst, any files open at that moment get corrupted.

[2] A cryptolocker or other ransomware. Unlikely on Linux, but not
impossible.

https://linuxsecurity.com/features/anatomy-of-a-linux-ransomware-attack

https://www.zdnet.com/article/this-sneaky-ransomware-is-now-targeting-linux-servers-too/

Moral of #1: backup drives should ideally be on a different computer.
Moral of #2: when they're not in use, disconnect them or turn them
off.

-- 
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