this post was submitted on 15 May 2024
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cross-posted from: https://sopuli.xyz/post/12670977

iPhone owners say the latest iOS update is resurfacing deleted nudes

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[–] [email protected] 139 points 6 months ago (36 children)

Nothing sinister, we just don't delete what we say we delete. Instead we keep it in your profile to feed the algorithms and set the "deleted" flag to make you think it's gone.

[–] [email protected] 68 points 6 months ago (28 children)

I mean, to be completely fair, that's how data storage works.

We cannot really just make data disappear, so we let it get overwritten instead

[–] [email protected] 23 points 6 months ago (8 children)

But clearly the data is not overwritten and this was intentional. How do I know? Because that would amount to a massive amount of data, if it was de to a bug in Apple software or underlying filesystems, it would be detected in monitoring systems "Hey, we're using 10x the data we should be, maybe we should look into it".

The mistake was in the flag code that was supposed to fool us.

[–] [email protected] 49 points 6 months ago (2 children)

no when I say "overwritten" I mean that the area is set as deleted in the filesystem and the next time something writes to that area the data that was there before is disregarded.

[–] [email protected] 0 points 6 months ago (1 children)

and the next time something writes to that area the data that was there before is disregarded.

A single overwrite might not be enough to defeat physical forensics because shadows of the old data persist in how the new data is stored. Also when it comes to SSDs you might be waiting a long time for the data to get overwritten as the drive will wear-level its erm sectors (what are those things called with SSDs?).

[–] [email protected] 1 points 6 months ago

They are called cells IIRC

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