If many people use the same computer, it is recommended to use a software such as Folder Lockbox to protect your privacy. Folder Lockbox is a software allowing to protect any file or folder with a password. For that, you just need to locate your file and to drag it into the interface from Windows Explorer and to click on "advanced" to enter your password. Then you just need to click on “Save” to lock. Note that the protected folder is hidden so that nobody can see it even the administrator.