> but it’s very hard to “innocently” end up with one of those images that they are looking for from the database. Are you sure, given how many iPhone takeover/

> but it’s very hard to “innocently” end up with one of those images that they are looking for from the database. Are you sure, given how many iPhone takeover/jailbreak bugs regularly exist, including the recent 0-click iMessage bug? Would you like to dare a hacking group, domestic or foreign, to land a single verboten image on your iPhone? > And the way it’s being done (hashes), a collision is highly unlikely. The limited details so far are suggestive that its using perceptual hashes, which are more susceptible to collision-engineering/false-positives than cryptographically-secure hashes.