I'm aware this may seem a very noob question, but I don't connect generally to any WiFi other than at home or at work (both of which require a password to connect with) Visiting a friend in hospital today, I took my phone to show them a few photo's I knew they would like to see. They had to visit the "Bathroom" so whilst I was gone I thought I'd check up on emails, and noticed no wifi, so selected the WiFi icon and found a Hospital Public Wifi. Sounded what I needed, but when I attempted to use it, my Nexus 6 kicked up a warning about this is a unsecured network and something like people may be attempting to access/hack your device. I'm presuming this is just my phone going into tin foil hat mode and actually it would have been fine, but I didn't continue as I'd never seen this type of warning before. So is this "The norm" and totally what you would expect when connecting to any public and open WiFi and my phone is just warning me, when really it's all fine ?