American Express says an employee accessed personal information in an attempt to commit fraud. The employee accessed names, Social Security numbers, card numbers, and more. American Express offered two years of free credit monitoring through Experian Identity Works. The individual, who is no longer employed by the company, is now under criminal investigation, the company said in a notice sent to affected cardholders, which includes the full name, physical and/or billing address, birth date, and credit card number, among others.”]