People with access to your computer or your network might be able to read, copy, or change files that are in a shared folder. When you share files or folders, they are not as protected as they are when you do not share them.
The method you choose depends on whom you want to share files with, and what computer they will use to access the files. Sharing files and folders overview You can share the files and folders stored on your computer, on a network, and on the Web.