Windows 10 Wi-Fi Sense Feature Shares Wi-Fi Passwords With Contacts

[silicon_toad2000]

One of the new features of Microsoft's newest operating system is that
Windows 10 will automatically share an encrypted version of your Wi-Fi
network password with contacts in Outlook and Skype unless users
specifically opt out. The password will not be disclosed, but the
sharing mechanism will allow those contacts to use your Wi-Fi network
if they are in the area. The Express settings for installation enable
this feature by default. Some say that the feature is not as scary as
people would like to think it is.
http://krebsonsecurity.com/2015/07/windows-10-shares-your-wi-fi-with-contacts/
http://www.v3.co.uk/v3-uk/news/2420003/windows-10-wifi-sense-feature-faces-security-backlash
http://www.zdnet.com/article/no-windows-10s-wi-fi-sense-feature-is-not-a-security-risk/