Yes perceptual hashes are not cryptographically secure so you can probably generate collisions easily, (i.e. a natural looking image which has a attacker-specif

Yes perceptual hashes are not cryptographically secure so you can probably generate collisions easily, (i.e. a natural looking image which has a attacker-specified hash). Here is a proof of concept I just created on how to proceed : https://news.ycombinator.com/item?id=28105849 https://news.ycombinator.com/item?id=28105849