> 2. A lot of people evidently use iCloud Photo Library to store images of things other than pictures they took themselves Not in the context of CSAM, but this

> 2. A lot of people evidently use iCloud Photo Library to store images of things other than pictures they took themselves Not in the context of CSAM, but this is iOS’s “appliance” user interface coming back to bite it. The iOS photos app doesn’t appear to have a way to show the user only the photos they took. Apps like Twitter, browsers, chat apps, screenshots all get to save their photos in the photo library. I believe iOS 15 has a way to filter photos by originating app, but for most users currently, it’s hard not to use iCloud Photo Library for photos I didn’t take myself. Interestingly, users save chat history including images, from apps like iMessage and WhatsApp, on iCloud too. I’m not sure what happens to e2e encryption for backed up data.