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Old 11-16-2014, 02:22 PM   #1
Kraftwerk
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Question Kindel 4 facory reset/security issue
Hi
I've used this forum's 'search' function but could not find the answer I am after.

When doing a factory reset, this does not actually remove information completely (it is still on your device).

Is there a way that is known to completely remove all information properly?

I have just bought a PW2 (waiting for it to arrive!) and I'm thinking of selling my K4.

Thanks
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Old 11-16-2014, 04:33 PM   #2
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Doing a factory reset and deregistering it is sufficient.
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Old 11-16-2014, 04:37 PM   #3
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The only information they Might find would be books LOL But as said Dereg it then Factory Re-set.
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Old 11-17-2014, 01:36 AM   #4
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Normally, a factory reset does remove all content, and resets everything just like it was when you first bought it. Not registered any more, too.
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Old 11-17-2014, 07:59 AM   #5
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Originally Posted by Katie1 View Post
The only information they Might find would be books LOL But as said Dereg it then Factory Re-set.
I'm thinking of wifi password.
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Old 11-17-2014, 08:03 AM   #6
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Originally Posted by susan_cassidy View Post
Normally, a factory reset does remove all content, and resets everything just like it was when you first bought it. Not registered any more, too.
From what I've been reading, with a flash drive information does not actually get deleted but is still there (only it's not visible, unless you you a program).

So doing a factory reset does not actually permanently delete content.
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Old 11-17-2014, 09:27 AM   #7
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Forget the Wifi Password: Settings>WiFi Networks>Forget
If all of your books were from amazon, then they are tied to your account, if not, just install ccleaner and use the 'wipe free space' tool on your kindles drive.
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Old 11-17-2014, 10:24 AM   #8
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Quote:
Originally Posted by Kraftwerk View Post
From what I've been reading, with a flash drive information does not actually get deleted but is still there (only it's not visible, unless you you a program).

So doing a factory reset does not actually permanently delete content.
True, but how many people do you think are that concerned about it? If anyone wants to "undelete" my books and read them, they're very welcome to do so.
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Old 11-17-2014, 12:14 PM   #9
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I really doubt anyone purchasing your Kindle would be interested in your wifi password. If you really find that to be a concern, just change the password after you sell it.
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Old 11-17-2014, 08:56 PM   #10
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Quote:
Originally Posted by Kraftwerk View Post
From what I've been reading, with a flash drive information does not actually get deleted but is still there (only it's not visible, unless you you a program).

So doing a factory reset does not actually permanently delete content.
I seriously doubt anyone intends to do forensic analysis of your Kindle.

And, I am pretty sure the WiFi password is in the hidden system partition, which would require jailbreaking and probably imaging the system drive, so you can do something like this: https://wiki.archlinux.org/index.php/file_recovery and pray to the G-d of your choice that the block location has not in the meantime been overwritten.


That's right -- in the natural use of a filesystem, the block location of deleted files gets recycled, because otherwise there'd be little point of deleting them.

Restoring deleted files is potluck, there are companies making a living off forensic data recovery.
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