Re: Putty ....
Well documented that windows 10 comes with a Microsoft keylogger installed, purely for diagnostic use only you must understand. They would never be tempted to use that for advertising purposes on all those free installs of Windows 10...
Google for "How to turn off the Windows 10 keylogger enabled by default". That should get you started.
I would also question the 500m number, which is clearly utter horseshite, business's haven't adopted (install numbers stopped overnight when the freebie Win10 datamine edition ended), and the PC is pretty much dead outside the office (and should be dead inside the office given how much of a security liability it is)