https://news.ycombinator.com/item?id=10099180
"Information transmitted: All text typed on the keyboard is stored in temporary files, and sent (once per 30 mins) to: oca.telemetry.microsoft.com.nsatc.net pre.footprintpredict.com reports.wes.df.telemetry.microsoft.com"
On another side, MSFT never issued the statement what they actually collect, probably because their lawyers will need a month or two to clear that up.
If the quote is true, it's a real full-blown keylogger. It's hard to believe. But there should be the pressure to find out the truth.
The worst thing is that it seems the users also don't care.
Do read kstrauser's top post in this discussion regarding automatic snooping of kids and emailing the parents, implemented by MSFT in Windows 10.
https://news.ycombinator.com/item?id=10111271
He posted the snapshot later. Unbelievable. But it seems they really do this. Built in spying, then sending reports by e-mail.