When Apple released a preview version of iOS 10 at its annual developers conference last week, the company slipped in a surprise for security researchers — it left the core of its operating system, the kernel, unencrypted.
“The kernel cache doesn’t contain any user info, and by unencrypting it we’re able to optimize the operating system’s performance without compromising security,” an Apple spokesperson told TechCrunch.
Apple has kept the inner workings of the kernel obfuscated by encryption in previous versions of iOS, leaving developers and researchers in the dark. The kernel manages security and limits the ways applications on an iPhone or iPad can access the hardware of the device, making it a crucial part of the operating system.
Although encryption is often thought to be synonymous with security, the lack of encryption in this case doesn’t mean that devices running iOS 10 are less secure. It just means that that researchers and developers can
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