Nice, but isn't it a safety risk to log on a Wifi network you know nothing about ? You should probably warn users not to do any kind of sensitive browsing on it.
Indeed, there are risks involved, but I'd argue that connecting to public Wifi is a pretty common existing habit already. There are good ways to stay protected though whilst doing this e.g. using a VPN.
Totally appreciate this is not something the average user understands. In the long run it would be nice if we could offer VPN style functionality without users actually having to understand what a VPN actually is (e.g. an "Enter secure mode" button, but that's a longer term feature.