Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Using credit cards online: is it safe?
The answer: don't use your actual card number. Some banks offer virtual credit card numbers (services like Apple Pay are functionally the same). Bank of America's virtual cards work like this: The virtual card number is different from your actual card number, so the merchant never sees your real card number. In fact, the merchant cannot even tell that you are using a virtual card. You can set the maximum amount to be charged. You can set the expiration date from 2 to 12 months. Once the merchant has made a charge on that virtual card, only THAT MERCHANT can make any further charges on that same virtual card. It is not possible to discover the real card number from the virtual card number. So the result is that your risk is reduced to the merchant not delivering the order, or charging too much (but not over the limit you set). There is nothing to be stolen since your real info never goes over the internet, and once a merchant has used the virtual card once, no other merchant can use it. Other banks may have virtual cards which have fewer features. The only DISadvantage of this is that you have to go to the bank's website whenever you want to make a purchase from a new merchant. But you don't have to worry about them stealing your real credit card information.