Let's say you delete some files the usual way (recycle bin emptying) and you keep using your hard drive...

>implying

Fill the drive to max with other files

What about USB sticks and SSDs.
Does a a format delete everything on them?

this op you gotta download as much cp as possible until you have no more space left in your drive, then you can turn it over to geek squad or sell it and they'll never be able to recover the files

USB sticks will eventually lose their data completely over years, assuming you never plug it into a computer, but if there was an FBI investigation going on then there's very little chance they won't be able to figure it out.

SSDs eventually break from use but, like, everything breaks from use eventually so that's not real protection.

This will not work, you need to repeatedly, randomly assign 1s and 0s to every bit multiple times.

I was asking if file recovery is possible on a formated nand flash device. Like if you overwrite it once there should be no chance of a recovery due to the nature of the storage

Shouldnt overwriting the data once be enough? Or do hdd's have evidence of previous bit states after they have been changed?

Use shred you nigger. You're not using Windows right?

Yes, if you, for instance, take a platter where every even number sector is all set to 1s, and every odd number sector is set to 0s, and then tell it to change all sectors to 0s, and then hand it to the FBI, they will be able to tell what the drive looked like before you set everything to 0s.

Obviously there's a limit to this, but the point of DBAN is that it just scrambles everything randomly for as long as you ask it to so recovering old data is impossible.

if its that important that you get rid of it, then you're better off physically destroying it.

That doesn,t make any sense tho, the HD doesn't have a memory.

Formatting doesn't really delete anything. Overwriting once is enough for all flash-based technology.

oofies

Not really hiding anything so no need to destroy anything. Had sincere curiosity about the subject, specially about data entropy in cryptography related stuff. Still glad that in the end got some interesting/hilarious comments. Thank you anons.

HDD you can fill it with 1s and 0s to scramble the data.

However YOU CANNOT DO THIS WITH AN SSD, THE SSD IS LESS SECURE. If you own a buisness that handles sensitive information don't fucking use an SSD unless it's operating the OS strictly. Most SSD cleaning tools don't actually work, filling an SSD with 1's and 0's will only destroy its life. Stick with HDD.

HDD platters store data by aligning zones on the platter in a specific direction and they can be in more than just a 1 or a 0 state. there is more information on the platter than the interpreted binary data

Attached: hdd.jpg (500x243, 20K)

Hard drives aren't actually binary, user, they work within ranges and, when read, the HDD can tell what is supposed to be a 1 and supposed to be a 0. The FBI simply gets very picky and can discern the difference.

Did you know the sectors on your HDD are separated by lines drawn magnetically, just like the magnetic arm that reads and writes to the drive? The only difference is that this is done in factory to the platter by but a much more powerful magnetic head than the one your HDD is actually equipped with. Your platters actually look more like a gradient than hard, black and white 1s and 0s.

use a self-bootable copy of DBAN. Run a pass of checkerboard or multiple passes if you're paranoid.

well, a bitcoin wallet with millions in it is something i'd destroy a HDD for. doesn't need to be any nefarious.

stronk magnet + hammer
not joking