**Christopher Lemmer Webber** @cwebber@octodon.social · Jun 16, 2018, 21:18

**Christopher Lemmer Webber** @cwebber@octodon.social · Jun 16, 2018, 21:18

Christopher Lemmer Webber @cwebber@octodon.social

dd'ing old drives (the ones that I didn't smash up)

**Andrew Miloradovsky** @amiloradovsky · 2018-06-16T21:33:34Z

@cwebber
You shouldn't fill the drives with plain zeros (that doesn't really destroy the information), but with random bits, e.g. using symmetrically encrypted zeros.
Or use `shred`.

Jun 16, 2018, 21:33 · Mastalab · 0 · 1

**Christopher Lemmer Webber** @cwebber@octodon.social · Jun 17, 2018, 00:33

**Christopher Lemmer Webber** @cwebber@octodon.social · Jun 17, 2018, 00:33

@amiloradovsky Yeah I've used the dd while luks-encrypting over a temporary luks volume which works pretty well

I use "dd"'ing pretty generally as a verb though

**abc** @abc@masto.pt · Jun 17, 2018, 17:12

**abc** @abc@masto.pt · Jun 17, 2018, 17:12

@amiloradovsky @cwebber for the normal user, 0s is enough right? You need special tools to read what was there before the 0s, right?

**Andrew Miloradovsky** @amiloradovsky · Jun 17, 2018, 17:25

**Andrew Miloradovsky** @amiloradovsky · Jun 17, 2018, 17:25

@abc
Yes, you need some electronic equipment to read the plates' weak/residual magnetic properties. — That's not something you can do using just the standard HDD interfaces (buses & protocols). It's one of those hardcore infosec tricks.
@cwebber