Dow Jones & Co. disclosed that hackers had gained unauthorized entry to its systems, accessing contact information for current and former subscribers in order to send fraudulent solicitations.

The data breach potentially accessed payment card information for fewer than 3,500 individuals, said Dow Jones, a unit of News Corp and owner of The Wall Street Journal, MarketWatch and Barron’s. The goal of the broader hack seems to have been to obtain contact information, Dow Jones said.

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