It has always been thought that Apple refused to open source code on the ground that software and hardware provide users with the best user experience. However, according to foreign media reports, Apple recently released the XNU kernel source code of its desktop system on GitHub. XNU is Apple's Unix like kernel for Mac OS X and iOS. By opening the source code of the system kernel, developers will be able to better understand how Apple devices work in coordination with the kernel on the upper layer of the software, thus improving the use of software. However, this open kernel source code may also be a double-edged sword, which cannot exclude hackers from taking advantage of the loopholes exposed by the system kernel to obtain user information.

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