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Mastercard, Visa warn security breach may compromise data

USA Today, By Byron Acohido

Security and privacy experts say Heartland should assume all accounts that made transactions when the intruders were on the system are compromised. "Are we talking two weeks or two months?" says Roel Schouwenberg, senior antivirus researcher at Kaspersky Lab. "With proper forensics they should be able to conclude the maximum number of possible victims." Read more...