If you plan to carry your documents with you, keep them on you at all times, and download, soft copies on your phone (you can refer to them in case you misplace the docs.) Ensure that you keep all your confidential documents in a pouch inside a handbag/sling bag that is always on you or in a money pouch that’s strapped and secured to your waist.
Don’t use internet banking on an unsecure connection as your information can be stolen and misused.
The last thing you should do before you walk away after using a public terminal is delete all cookies and browsing history before you log off.
You can also create a separate travel email address, and only access that while travelling. This way, it will prevents access to your regular mailbox.
If you suspect something, change your password and pins to make sure it cannot be misused by anyone.
You need to password protect your phone, so that even if it gets if it gets misplaced, it cannot be unlocked by someone else. Also, make it a point to log of all apps before stepping out.
Change your bank account settings to receive all notifications about banking transactions via email. This way, in case someone misuse your account, you will immediately be notified via email, and can use that information to make a case about you travelling.