[blockloop]

As others have said, it is very common in ecommerce. There are strict rules around the updates. Your bank knows why the new card was added. If the reason was simple (i.e. renewing because of expiration) then they share the new card with Account Updater. However, if your card was lost or stolen Account Updater will notify the subscribers but will not share the new card number. This prevents chargebacks and other common billing problems.