> Could I intercept those users personal information suck as Facebook usernames, passwords, emails, etc?
Yes. You'd have to do a bit of work, since the info would be encrypted, but by being in-path you would get all the info you need to decrypt the messages.
> I always tell my wife to not use online banking etc when she visits a cafe with free internet, but it's just a hunch - not based on my actual knowledge on the matter. That's why I'm asking. Thanks!
Unless she does her web browsing over a secured vpn, then there's a chance that information could be seen by someone.
Yes. You'd have to do a bit of work, since the info would be encrypted, but by being in-path you would get all the info you need to decrypt the messages.
> I always tell my wife to not use online banking etc when she visits a cafe with free internet, but it's just a hunch - not based on my actual knowledge on the matter. That's why I'm asking. Thanks!
Unless she does her web browsing over a secured vpn, then there's a chance that information could be seen by someone.