Monitorizamos la actividad de su tarjeta para detectar patrones de compra que se salgan de su actividad "normal". If we detect deviations from your normal activity, you may receive a call from our fraud specialists so they can try to determine if the transaction is yours or not. Should the transaction not belong to you, the account can be immediately blocked to prevent any more fraudulent transactions. If you see a charge on your statement that you did not authorize, be sure to call the credit union at 1-800-538-3328.