In case of an unidentified credit card transaction that could not be tracked down with your customer details, it is possible that you may be asked to provide parts of your credit card number. Please note that you will only be asked for the first six (6) and the last four (4) digits (according to Payment Card Industry Data Security Standards). You will never be asked for additional information like CVV2 code or card expiration. Should this information be requested, please do not provide it.