Have to say that I don't bother with WiFi on a train as I reckon my phone's own 4G connection will be faster (and probably more secure).Indeed, I rarely hook into public WiFi nowadays, anyway, as the cost of mobile data has come down so much (I pay just under £17pm for unlimited calls and 18Gb of data - from one of the major networks with good UK and EU coverage). I have a VPN contract available but that's mainly used when abroad to watch BBC iPlayer...