Hannaford Had Trojan Installed On 300 Store Servers, One Copy For Each Store

The data breach at Hannaford involved a Trojan Horse that was installed on servers at every one of its 300 grocery stores, according to Hannaford officials. The software intercepted card data at the POS and then periodically transmitted them "to an unnamed offshore Internet service provider."

Those details come courtesy of a letter sent by Hannaford general counsel Emily Dickinson to Massachusetts Attorney General Martha Coakley and Governor Deval Patrick's Office of Consumer Affairs and Business Regulation, according to Hannaford officials and a report in The Boston Globe, which quoted from the letter. The chain decided to replace all of the servers to make absolutely certain the malicious programs were removed from the network.

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