There are two services I know of that allow you to create virtual debit cards. The purpose is for helping prevent your main card from being stolen and/or privacy from your bank. If a site you frequently purchase from gets hacked, the info stolen won't be your real card. I'd highly recommend it so that you stay protected on online vendors.
The first one I recently found is called Blur.
https://dnt.abine.com/#feature/payments
The other one is
https://privacy.com and this is one that I personally use. I believe this one is only available in the USA though. Cards created here can be one-time use, limited to a permanent spending amount in which anything over will be declined, or limited to a certain spending amount by day, week, month, or year.
