Four recent Windows 7 and 8.1 patches — KB 3022345, 3068708, 3075249, and 3080149 — are sending data to Microsoft’s servers.
According to Microsoft, the four patches are part of the Customer Experience Improvement Program and are only offered as optional downloads to users participating in this initiative.
List of telemetry updates to avoid :
KB2952664 Compatibility update for upgrading Windows 7
KB2990214 Update that enables you to upgrade from Windows 7 to a later version of Windows
KB3021917 Update to Windows 7 SP1 for performance improvements
KB3022345 Update for customer experience and diagnostic telemetry
KB3035583 Update installs get windows 10 app in Windows 8.1 and Windows 7 SP1
KB3068708 (replaces KB3022345) Update for customer experience and diagnostic telemetry
KB3075249 Update that adds telemetry points to consent.exe in Windows 8.1 and Windows 7
KB3080149 Update for customer experience and diagnostic telemetry
So make your choice in which updates to install and which to avoid !