I have my own domain. I create Email addresses as needed. Usually the place I’m using it @ domain. Then, I either redirect to my own if I need it, or redirect to bit bucket if I don’t. Credit Card info isn’t too important. All internet cards are debits that are funded with only what covers a particular purchase. If they are stolen, the thief gets nothing and I swap to a backup and close the account. Public WiFi – That’s what LTE is for.”]
Source: https://gizmodo.com/how-many-of-these-simple-security-tips-do-you-actually-1440451554