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Malware cited in data breach

March 29, 2008

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Unauthorized software that was secretly installed on servers in Hannaford Bros. Co.'s supermarkets across the Northeast and in Florida enabled the massive data breach that compromised up to 4.2 million credit and debit cards, the company said Friday.

The Scarborough, Maine-based grocer confirmed that it told Massachusetts regulators this week about the link between the breach and the illicit programs, known as "malware."

At least 1,800 cases of fraud have been linked to the data breach, with unauthorized charges showing up as far afield as Mexico, Italy and Bulgaria.

The breach has prompted concern in the industry because it appeared to be the first large-scale theft of credit and debit card numbers while the information was in transit.

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