When you seek to protect your data, processes, and applications against concerted attacks, you’re likely to find weaknesses on the operating system that hosts all of these. The operating system is the software that supports the basic functionality of the device. The primary operating systems in current use are several varieties of Linux and the server and desktop operating systems offered by Microsoft and Apple. If you don’t take care to protect your operating systems, you have no basis for getting to a strong security footing.

You can mitigate threats to the operating system in several ways. One of the easiest methods ...

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