Payments processor Heartland Payment Systems Inc. said Tuesday its system used to process Visa, MasterCard, American Express and Discover Card transactions was breached last year, but asserted that merchant and customer data were not affected.
Payments processor Heartland Payment Systems Inc. said Tuesday its system used to process Visa, MasterCard, American Express and Discover Card transactions was breached last year, but asserted that merchant and customer data were not affected.