Visa and MasterCard are acknowledging a possible data breach of a payment-card processing company network. The Wall Street Journal, based on an unnamed source, is now identifying Global Payments of Atlanta. Gartner analyst Avivah Litan says the data breach started with a break-in by a Dominican national into an online card payments account for a taxi and parking garage in New York City. Litan: “Looks like the hackers took over an administrative account that was not protected sufficiently” The breach may only impact about 50,000 cardholders.”]