Malware blamed for supermarket data breach

A supermarket security breach late last year/earlier this compromised over 4 million credit/debit cards and led to thousands of fraudulent transactions. The breach has been blamed on malware on the store's servers. The fact that the store systems were PCI DSS compliant, apparently, doesn't exactly inspire confidence in the system of independent security audits but on the other hand it's a reminder that malware is an omnipresent threat.