https://support.microsoft.com/en-au/kb/3022345
Update to enable the Diagnostics Tracking Service in Windows
This update enables the Diagnostics Tracking Service in Windows 8.1, Windows Server 2012 R2, Windows 7 Service Pack 1 (SP1), and Windows Server 2008 R2 SP1. This tracking service collects data about functional issues in Windows.
Sounds like almost spyware?