Are my credit card details secure?

Yes. We use two of the worlds leading 3rd party credit card payment processors, Clickbank and 2Checkout. We use Clickbank for the download version of Rocket German and 2Checkout for the Rocket German Hardcopy. Clickbank is VeriSign secure and are considered the worlds most secure credit card payment provider. Clickbank would perform several thousand transactions every day and millions of transactions over the course of a year. In order to process payments with Visa and Mastercard credit cards, Clickbank requires: the CVV2 or CVC2 validation code. Most cards have this 3-digit code printed on the back of the card, to the right of the card number. American Express cards have a 4-digit code printed on the front, to the right of the card number. If you are 100% certain your card has no code on it, then enter "none" in the blank.