By April 25, forensic teams were able to confirm the scope of the personal data they believed had been taken, and could not rule out whether credit card information had been accessed.
Shares of Visa and MasterCard dipped last week after the Senate rejected a proposed six-month delay on a Federal Reserve rule to cap debit card swipe fees at 12 cents per transaction.
Now that banks are facing a rule that would limit the fees they collect on debit card swipes they are asking the Federal Reserve for some mercy on how far the limitation will go.
The ABA is referring to a Fed rule known as the Durbin Amendement that would to reduce the average debit card swipe fee collected by banks by nearly 75 percent from an average of 44 cents per swipe to 12 cents.
They say the rule, which places a cap on the amount that banks can charge retailers each time a customer swipes their debit card, hurts customers and banks.