They can also be useful if your CC data gets leaked in a breach. If it isn't a virtual card your bank will probably cancel your existing card and issue you a n

They can also be useful if your CC data gets leaked in a breach. If it isn't a virtual card your bank will probably cancel your existing card and issue you a new card with a new number. Some merchants where you had the old card on file might get the new number automatically via a credit card update service, but it is likely some will not and then you need to remember to go manually update them if you want them to keep working. If you had used a virtual card on the site that got breached it should in theory not affect the underlying card or any other virtual cards derived from it.