Some study some time ago showed that you can use the existing hundreds of websites that have some credit card form to brute force your way into getting all the

Some study some time ago showed that you can use the existing hundreds of websites that have some credit card form to brute force your way into getting all the fields: https://news.ycombinator.com/item?id=13161948 https://news.ycombinator.com/item?id=13161948