2. Invalidate expired credit cards that have been cancelled. Although the credit card has been cancelled, the magnetic stripe of the card still retains the relevant information of the credit card. Just cut the card with scissors. The more broken the better, so that the information will not be easily leaked.
Pay attention to the difference between credit card cancellation and account cancellation. If there is no other peer credit card in the name, you can choose to cancel the account. If you just want to cancel your credit card, you can choose to cancel it.