> "Client side scanning" (both in general, and in the recent Apple kerfuffle) is talking about a network client, that will be talking to servers that are owned

> "Client side scanning" (both in general, and in the recent Apple kerfuffle) is talking about a network client, that will be talking to servers that are owned by "them." If they wish to enforce rules over what is stored on their server then to enforce that right, the only two choices are to disallow E2EE or to perform client-side scanning. So the core of the problem is that they want to enforce rules over what is stored on their servers, even in E2EE form. They could just allow regular E2EE, where they ignore the content that they don't know and push back against politicians who think they are entitled to all data. They chose to push back against user's privacy instead. What if I have a file on my phone that is already encrypted before I upload it to icloud and it gets encrypted a second time? Apple would have no knowledge about its content. Would they have to scan all my other devices too?