Windows 10 will share your WiFi password with your 1500 friends on Facebook as a convenience to you.
It also will be shared with your contacts on Skype, hotmail and Outlook.
Good luck with that.
I love this quote from the article :
"... the feature doesn't share an actual password, but rather an encrypted version of it."
https://www.yahoo.com/tech/s/windows...164057617.html