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At the time of the announcement in 2021 there were no encrypted photos in iCloud. There was "private photo library only on your device" and "photos shared with

At the time of the announcement in 2021 there were no encrypted photos in iCloud. There was "private photo library only on your device" and "photos shared with Apple (not private)". The scanner would not have scanned private device-only photos. > "If Apple’s CSAM scanner was deployed today, it would be scanning those photos in cleartext on your phone before unreadable data was sent up to the cloud." Or enabling Advanced Data Protection could have disabled the scanner, we don't know. Even if it went the way you said, you could still not use iCloud and have private photos on your device, whereas your phrasing is trying to imply that there would be no option to do that.

matthewdgreen 4y ago
Apple has been working on end-to-end encrypted iCloud since at least 2018 [1]. In fact they’ve been gradually implementing it since 2015. They finally deployed ADP in 2022. It is ludicrous to believe that in 2021 they designed a client-side photo scanning system whose only conceivable purpose is to be part of an end-to-end encrypted backup system, and yet also believe that system was not intended to be turned on as part of their ongoing (and ultimately successful) encryption rollout. I think we will have to agree to disagree about the idea that turning on cloud backup suddenly makes my private photo library “not a private photo library.” [1] https://www.reuters.com/article/us-apple-fbi-icloud-exclusive/exclusive-apple-dropped-plan-for-encrypting-backups-after-fbi-complained-sources-idUSKBN1ZK1CT https://www.reuters.com/article/us-apple-fbi-icloud-exclusiv...