Lessons of the trade : Handling CVV numbers

Just for my notes.. Even though the CVV numbers on a credit card, look like numbers :), don’t treat them as integers in your code. Some of the numbers start with a 0.. so 059 might become 59 by the time you try to process it if you capture the CVV field as an integer.

Just treat them like a string.

And obviously you are not storing them anywhere in your application/network :). Or you might end up in the headlines like some of our retailers.

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