Payment card processor Global Payments says it’s not responsible for the duration of the breach. The breach exposed at least 1.5 million credit and debit numbers. Visa and MasterCard initially said the breach began in mid-January 2012 and lasted for about a month. But earlier this week, MasterCard warned banks that the breaches, which were first detected in early March, dated back to at least early June 2011. Global Payments processed $120 billion in MasterCard and Visa transactions for merchants in 2011.”]
Source: https://www.darkreading.com/attacks-breaches/global-payments-breach-fresh-questions-on-timing