Enable Built-In Ransomware Protections to Guard Files Against Attacks
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Ransomware encrypts files and holds them hostage until you pay a ransom to unlock them. It can cause major damage.
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Windows includes built-in ransomware protections in Microsoft Defender, but they are not enabled by default.
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You can turn on controlled folder access to restrict apps from accessing folders like Documents and Pictures.
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Make sure you're logged into OneDrive for file backups.
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You can manually allow apps access to protected folders if needed, like for gaming save files.