This really isn't a bug. Whoever was snooping could do it while you are in store instead.
There's really only two solutions here:
a) get rid of of public wifi points completely. This is compltely intractable.
b) encrypt your data sent over the internet so it doesn't matter if someone snoops it. This is the only practical answer.
This is like someone realising 'ooh if I run Wireshark in promiscuous mode I can snoop everyone on an unsecured network' but not wondering what the fix would possibly be.
There's really only two solutions here:
a) get rid of of public wifi points completely. This is compltely intractable.
b) encrypt your data sent over the internet so it doesn't matter if someone snoops it. This is the only practical answer.
This is like someone realising 'ooh if I run Wireshark in promiscuous mode I can snoop everyone on an unsecured network' but not wondering what the fix would possibly be.