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<advice on what they warnings mean>
Application Whitelisting
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This one is a bit trickier to implement, especially across a large fleet of computers and users, but is also the simplest way to stop personal system attacks. Application whitelisting is basically defining a list of programs that a user is allowed to run and blocking any other programs that attempt to execute. This means that even if an attacker manages to load their malware onto your device and either tricks you or the device into running the malware, it will be blocked since it isn't in the list of allowed programs.
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