Virtual Private Network (VPN) - Free if possible

A VPN is a private connection between two or more computers you control. I'm not sure how it could be made to work unless it's between your traveling computer and your stationary one back home.

Any financial institution will use a secure website - https - for on-line transactions. The chances of having that compromised are almost nil.

Of course, if you're going to use a "community" computer like those at a public library while you're on the road, then all bets are off.

al