Windows 10 Shares Your Wi-Fi With Contacts!
This brilliant new feature, which Microsoft has dubbed Wi-Fi Sense, doesn’t share your WiFi network password per se — it shares an encrypted version of that password. But it does allow anyone in your Skype or Outlook or hotmail contacts lists to waltz onto your Wi-Fi network — should they ever wander within range of it or visit your home (or hop onto it secretly from hundreds of yards away with a good ‘ole Cantenna!).
Time to change things....
Change your network name (a.k.a. “SSID“) to include the text “_optout” somewhere in the network name (for example, oldnetworknamehere_optout
Dam you Microsoft