MICROSOFT PHOTODNA IS VULNERABLE TO FALSE POSITIVES AND DATA LEAKAGE

Summary from the TLDR InfoSec newsletter

Researchers from Ghent University and KU Leuven published the first white-box analysis of Microsoft PhotoDNA, revealing that its piecewise-linear hash function can be exploited within seconds on a standard laptop to produce exact collisions, generate false positives matching CSAM hashes, evade detection, and partially reconstruct source images.