Well, true, but copying personal data to the PC is exactly what sync is supposed to do - a good chunk of that data is actually synced with the computer, and the

Well, true, but copying personal data to the PC is exactly what sync is supposed to do - a good chunk of that data is actually synced with the computer, and the rest needs to be included in backups (which need to be able to be restored on other devices, so they can't be encrypted with a device-specific key). If Wi-Fi sync is enabled, all that needs to happen over Wi-Fi. So I'm not sure what Apple could do about it, other than make it harder to compromise Macs. The part of this story I think deserves more attention is security against a sophisticated adversary who does not have the passcode or access to a paired computer. In this case, data protection should be effective (the data is encrypted with a key that requires going through the hardware AES engine to derive from the passcode, i.e. slow), but for some reason most data is apparently not protected. This doesn't seem hard to improve to me, and I'd like Apple to do so.