score:2
So long as you're using your own computers using SSL/TLS on websites should be sufficient, with a few caveats.
Also, this question might be better posted on security.stackexchange.com instead of travel.stackexchange.com..
Upvote:1
Whenever you use a shared computer, be it internet cafΓ© or hotel/hostel, make sure you open a private navigation session. This ensures that no cache, cookies, form data, and passwords are stored once the session is closed. To be extra safe you should also manually clear this data from the settings panel of your browser once you're done. This is a very basic yet extremely important measure you should airways take to safeguard your accounts.
Other, possibly more effective, measures include connecting to a safe VPN, and using that to tunnel you through towards the critical sites you need to navigate (bank accounts, emails, PayPal, etc). If you want to go the extra mile you can search for Tor browsing.
All of the advices above assume you don't have restricted user rights on the machines you use.