Even if they cancel, your credit card information will remain in it. Foreign payment doesn't need a mobile phone verification code or password like domestic payment. Once you enter the card number and the security code at the back, it is equivalent to tying your wallet to them. You don't need to agree to deduct your money, so I suggest you change your card number at the bank, so all platforms that bind credit cards will be invalid. Besides, there is nothing to buy on external websites. I haven't had the demand for online shopping abroad for several years, let alone at home. Amazon is ok, especially it can't bind the card to some messy shopping websites in the United States. It's not that websites charge fees indiscriminately, but that information is easily leaked and stolen. If you really want to buy a card specially used for shopping, charge less money or only charge the right money before spending.