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for anyone who was in any of the #GNOME #matrix rooms a week or so ago... the flatpak version of element keeps its cache at ~/.var/app/im.riot.Riot/config/Element/Cache/Cache_Data/. you can use something like wipe to securely erase it.

EDIT: wipe and shred and co. won't work on an SSD. use something like blkdiscard instead.


Is shred bad for erasing SSDs?

Whenever I sold a drive I've zeroed it once with shred from a live environment: sudo shred -vzn 0 /dev/sdX Before I double-checked it wasn't mounted. This is the fastest way to securely erase a dr...
Unix & Linux Stack Exchange
#Matrix #gnome
This entry was edited (3 weeks ago)
in reply to Lynnesbæn :bune_ylw:

Lynnesbæn :bune_ylw:
Lynnesbæn :bune_ylw:
• •
i'm on an SSD and wipe's last update was in 2004 to add support for solaris so uh i don't know if it will work the way it's mean to
in reply to Lynnesbæn :bune_ylw:

Paul Richards
Paul Richards
• •
it certainly won’t work properly on any CoW filesystem, or if you have LVM snapshots, or any other number of things. That tool is for extremely basic cases only (ext4 on an hdd).
in reply to Lorgo Numputz

Lynnesbæn :bune_ylw:
Lynnesbæn :bune_ylw:
• •

@lorgonumputz @pauldoo alright so according to this: https://unix.stackexchange.com/a/593340

shred, wipe, et al just won't work on SSDs because of how they function. the best you can do is a tool called blkdiscard which will politely ask the SSD to wipe the file. failing that, you have to wipe the entire SSD :face_think_thonking:


Is shred bad for erasing SSDs?

Whenever I sold a drive I've zeroed it once with shred from a live environment: sudo shred -vzn 0 /dev/sdX Before I double-checked it wasn't mounted. This is the fastest way to securely erase a dr...
Unix & Linux Stack Exchange
@Lorgo Numputz @Paul Richards
in reply to Lynnesbæn :bune_ylw:

Lorgo Numputz
Lorgo Numputz
• •

@pauldoo

I concur; this inherent issue is why I've moved all of my infrastructure to use LUKS encrypted disks - which means I don't have to worry about wiping and destroying disks that I need to dispose of.

BUT - that doesn't really help much if the person trying to recover the file has access to the unencrypted filesystem data.

shred(1) does try to do some renaming tricks (see -z) but not at all a guarantee that will obfuscate *enough*.

@Paul Richards
in reply to Pinguin :debian: :matrix:

Lynnesbæn :bune_ylw:
Lynnesbæn :bune_ylw:
• •

@pinguin i didn't see any of the images, but apparently they contained some pretty horrible illegal stuff

if you want a more explicit answer: https://matrix.to/#/!guvcqdhipvyuqxhmyk:gnome.org/$b1prccrdi4979cbes94zqdymylgptbce8utl1w1myn8


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