Sellers of stolen credit card data may have multiple domains active often located on publicly accessible sites. Photo: Getty

How a criminal gang stole information for more than 20 million credit cards

The attackers obtained information by sending an email attachment that triggered the download of malware when clicked, and then installing other malware on point-of-sale systems to extract payment data

Topic |   CNBC

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Sellers of stolen credit card data may have multiple domains active often located on publicly accessible sites. Photo: Getty
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