American Express is strongly committed to the security of all our Cardmembers’ information and wants to inform you that a merchant where you have used your American Express Card for payment detected unauthorized access to their website. At this time, we believe the merchant’s affected data files included your American Express Card account number, your name and the expiration date on your card. Importantly, your Social Security number is not impacted and our systems do not show any indication of unauthorized activity on your Card account related to this incident.;