BUFFALO, NY -- First Niagara is issuing a warning to customers about a possible security breach concerning their MasterCards.
A spokesperson for the bank says they were recently notified by MasterCard about the potential problem.
As a precaution, they are deactivating affected cards and reissuing new ones.
They say they are not releasing any information on the number of customers affected for security reasons.
They also declined an on-camera interview.