1st Class Software is committed to keeping your details private and secure. Your details will not be given to any third party (other than WorldPay who carry out credit card verification on our behalf). When you make a secure payment on our web site, the details are encrypted, making your details completely secure. When we send you a confirmation via email we do not include your card number, but enough of the transaction details for you to identify it. Each transaction is given a unique transaction reference, which should be quoted in any query.