<sarcasm on> I'm sure lots of people are looking forward these days to upgrade to Windows 10 <sarcasm off>. Personally, the only reason why I'm even writing about it is the new Wi-Fi Sense feature that has jumped over from Windows Phone to the desktop to freely share Wi-Fi passwords with your contacts in Outlook, Hotmail, Skype and Facebook. Great for convenience, bad for security, bad for me.
Bad for me because in the past I let friends access my Wi-Fi network at home. I'm sure I haven't changed my Wi-Fi password since because it's a pain to change it on all of my devices that use the network, especially printers and other devices that don't offer an easy way to change the password. But I guess I have to do it now because Windows PCs of friends with whom I've shared my password in the past that upgrade can now freely share it with their friends, i.e. people I don't even know, with a simple tick in a check box. Obviously, Microsoft get's to see and store it, too.
Fortunately it's not as bad as it sounds at first as users still have to tick a check box per Wi-Fi network they want to share credentials for. Ars Technica has a detailed description of how the feature works if you are interested in the details. Still, I think it's time for a password change at home.
Yes, I know, giving out my Wi-Fi password was never secure to begin with. This is why I have a guest Wi-Fi SSID and password for quite some time now that I can quickly switch-on and off as required. Another benefit of this solution is that I can change the SSID and/or the password every now and then so things don't get out of hand. This way even if friends decide to or accidentally share my guest Wi-Fi credentials with Microsoft and the world it's of little use to anyone as the guest Wi-Fi SSID is automatically shut down after a pre-configured time after the last user has left.
And that by the way also limits the damage done by those automatic 'backups' of private data to Google Servers that Android based devices perform every now and then.