> Prosecutors said the scheme involved attacks on two banks, Rakbank, which is in the United Arab Emirates, and the Bank of Muscat in Oman.
http://www.smh.com.au/it-pro/security-it/massive-21stcentury...
edit: Oh, the NYTimes version of this story says it's a US based credit card processor name withheld http://newsdiffs.org/article-history/www.nytimes.com/2013/05... Other versions say the foreign banks themselves were the credit card processors http://mashable.com/2013/05/09/atm-hackers/
[1] : http://cbsnewyork.files.wordpress.com/2013/05/lajud-13-cr-02...
Not sure about the other one, the bank of Muscat site is a bit crap, didn't find mention of the processor in the T&Cs or description of the cards [2].
[0] https://www.rakbankprepaidcard.ae/CustomerPortal/WebPages/Lo... [1] http://www.electracard.com/contact-us.php [2] http://www.bankmuscat.com/cards/prepaidmain.shtml
[0] http://www.controlcase.com/ [1] https://www.pcisecuritystandards.org/
It maybe because the vulnerabilities still exist and they don't want the general public to know about it. Yet this rings hollow as the bad guys still know about it.