> How is a perceptual hash sophisticated and impressive given that it can be abused by governments demanding Apple scan for political content, etc? It's pretty

> How is a perceptual hash sophisticated and impressive given that it can be abused by governments demanding Apple scan for political content, etc? It's pretty sophisticated when you look at everything implemented and also consider the infrastructure / review pipelines that are required. See the link below: https://www.apple.com/child-safety/pdf/Security_Threat_Model_Review_of_Apple_Child_Safety_Features.pdf https://www.apple.com/child-safety/pdf/Security_Threat_Model... It's based on perceptual hashing, but the whole end-to-end system is clearly sophisticated when operating on Apple's scale.