Windows 8 & 10 come with a useful built in utility called File History. This feature of Windows automatically backs up the entire contents of all your libraries (both standard and ones you create) to an external USB stick or HDD every hour, which is the default setting.
Another feature of Windows 10 that is getting a lot of heat on at present is Windows Update Delivery Optimization. This feature does two things, and is turned on by default.
There has been a lot of chat on the internet regarding the privacy settings in Windows 10. When you first install and configure Windows 10 the installer will encourage you to choose “Express Settings” which I think most users (including me) will choose. However this will perhaps give Microsoft more information about you than is comfortable. So with this in mind I thought it best to go back and review the privacy setting on my two Windows 10 computers and document what I find.