With Apple's Advanced Data Protection, you can now enable end-to-end encryption of data that was previously only encrypted in transit and on Apple's servers. Follow these steps to turn it on: https://www.eff.org/deeplinks/2023/05/how-enable-advanced-data-protection-ios-and-why-you-should
How to Enable Advanced Data Protection on iOS, and Why You Should

Apple has long used end-to-end encryption for some of the information on your iPhone, like passwords or health data, but the company neglected to offer a way to better protect other crucial data, including iCloud backups, until recently. This came after years of a hard fought battle pushing Apple...

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