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The more interesting point about hash collisions is probably less about accidental clashes and more about intentional clashes. If the hashes in the CSAM databa
by ctur 5y ago
The more interesting point about hash collisions is probably less about accidental clashes and more about intentional clashes. If the hashes in the CSAM database were known publicly, and people began generating intentional clashes with innocuous images, and those images were on many phones, it could basically DOS whatever manual process Apple creates.
Basically it could become an arms race where, say, free speech advocates convince people to just keep and share some images and overwhelm the process. Then Apple adapts to new hashes, blocklists known false positives, and the cycle repeats.