Numbers are compromised in bulk. I frequently delete quarantined posts offering to sell card numbers and security codes in multiples of a thousand. The card numbers can surface months after the security breach, and fabricating fake cards is evidently not very difficult. There is no necessary connection between the location where a card is fraudulently used and where the compromise occurred.
Thanks mia. Appalling that you have to moderate for such things on the forums. I feel like you're under-appreciated around these parts.