End-to-end iCloud encryption is not enabled by default. Here’s why you should do it. — Advanced-Data Protection for iCloud is what Apple calls the end-to-end encryption technology that is offered with iOS 16.2, iPad OS 16.2, and macOS 13.1. What’s Advanced Data Protection for iCloud? With this option enabled, Apple uses advanced encryption technology to store your iCloud backup, Photos, Notes, and more on its server.