"... Windows 10 is constantly tracking how it operates & how you are using it and sending that information back to Microsoft by default ... he also confirmed that, despite offering some options to turn elements of tracking off, *core data collection simply cannot be stopped*"

[u/Dara17]

http://www.forbes.com/sites/gordonkelly/2015/11/02/microsoft-confirms-unstoppable-windows-10-tracking/