Articles discussing the use of a VPN (Virtual Private Network) to prevent snooping or a hacker when one is using a public wifi network are becoming more common. Here is an article proposing the question: 'should Apple start a VPN service'? https://9to5mac.com/2018/05/25/apple-vpn-service/#more-534797
The author likes the idea, and states why. An interesting concept.
Jim Hamm