This. If you're polling a bank for credit transactions, everything you get is radioactive until proven otherwise. Best case when you find a big string of digits is that they're meaningless, and that's not a good reason to store them.
They seem to have got it right this time, would have been better for them if they had gotten it right the first time. I feel very sorry for them, it was a somewhat minor slip (albeit, a complete pain for the users involved), but could potentially ruin them.
can we just let this go already? anytime you are sharing data that has NEVER been shared before, there will be edge cases that are less than ideal. it was 5 numbers and a perfect storm of circumstances that resulted in it being released. I applaud Blippy's aggressive response and how they took responsibility but it could have happened to anyone. I chalk this very small slip up to a consequence of innovation, and not negligence or incompetence.