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When a wipe occurs, the file system key is deleted. It's as simple as that. Page 11 of the September 2015 iOS Security White Paper states that the file system key is stored in NAND. The metadata of all files in the file system is encrypted with a random key, which is created when iOS is first installed or when the device is wiped by a user. The file ...


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There's no global switch in iOS 9 or earlier. The app developers can decide, what the app show during loading. If you see security issues or just feel that the experience using this feature is poor, the only remedy today is to contact the developer. Many professional apps like 1Password and Apple notes are coded to not disclose secure information in a ...



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