[carom]

So the attacker creates an image then the user has to download it. Then the FBI digs in and see it was a crafted false positive, then begin to investigate who sent it and why. Then the user takes civil action against the person who sent it for harassment.

[simondotau]

More precisely, 30 carefully crafted false positives. All of which need to be imported into your iPhone's photo library to sit alongside pictures of your dog and your mum. And then they have to get past human review. Not impossible, but so far beyond implausible that it can be dismissed as ridiculous.

And if this trick ever works, it could only be done once before Apple has the opportunity to plug holes in their NeuralHash algorithm and fix any deficiencies in the manual review process.