Global Payments breach affects Track 2 data from approximately 1.5 million cardholders. Analyst: Central American gang broke into the companys system by answering knowledge-based authentication questions correctly. Expert: “It would not be surprising if the investigation slowly reveals that the breach involved techniques such as Web application exploitation, maneuvering from a compromised public system into the internal systems, and that the presence on the network was a longer term than estimated” Security expert: “These tend to be common characteristics of these kinds of events””]