Tuesday, December 21, 2021

Ribosome Inverts PhotoDNA

Anish Athalye (via Hacker News):

Microsoft PhotoDNA creates a “unique digital signature” of an image which can be matched against a database containing signatures of previously identified illegal images like CSAM. The technology is used by companies including Google, Facebook, and Twitter. Microsoft says:

A PhotoDNA hash is not reversible, and therefore cannot be used to recreate an image.

Ribosome inverts PhotoDNA hashes using machine learning.

This demonstration uses provocative images to make a point: rough body shapes and faces can be recovered from the PhotoDNA hash.


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