As you know Windows 10 is out with all the related privacy issues (you should be aware of): what makes Wi-Fi Sense controversial is that it encourages you to crowdsource private Wi-Fi network passwords with your Outlook, Skype and Facebook contacts.

Google Street View cars were found to be collecting data from unsecured Wi-Fi networks in 30 countries worldwide; Google feeds this data into its location database, the Google Location Server, and now collects from Android phones and tablets.

To opt-out your wifi from Microsoft Wi-Fi Sense and Google Location Server you need to change the SSID in this way:

Opt-out from Microsoft Wi-Fi Sense including _optout somewhere in the Wi‑Fi network name (SSID);

somewhere in the Wi‑Fi network name (SSID); Opt-out from Google Location Server changing the network name (SSID) so that it ends with _nomap.