Sign your cards immediately upon receipt.
Keep your PIN codes secret, and never write them down.
Treat your cards as you would cash.
Never give out your card number, the expiration date, or the three-digit security code on the back of the card.
Always review your statements and immediately report any irregularities or unfamiliar charges to your bank.
If your card is lost or stolen, block it immediately.
Use geoblocking so that your card can't be used in countries you don't plan to visit in the near future. You can adjust those restrictions at any time as your travel plans change.