Best Free Ways to Protect Your Private Files

From Lifehacker:

When you're saving sensitive files on your computer meant for your eyes only, make sure you've got the right tools on hand to keep them private. Whether you want to shield your brilliant startup business plan from the Pointy Haired Boss, or hide your stash of Gillian Anderson photos from the kids, there are several free tools that can encrypt, password-protect, or obscure files and folders from others who might use your computer. Let's take a look at various methods, tools, and levels of privacy and security you can use to lock up your sensitive data:

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