http://www.techradar.com/news/windows-10-set-to-improve-privacy-by-revealing-what-data-it-collects-about-you

In a move that will certainly please privacy-conscious users, it seems that Microsoft is about to introduce the ability to view and delete the telemetry data that Windows 10 collects, according to new options that have popped up in the operating system’s latest preview builds.

There has long been controversy about Windows 10’s treatment of the user’s privacy, and one of the thorniest aspects has been what ‘diagnostic’ data the OS collects from the user’s PC to send back to Microsoft’s servers for analysis.