(PCWorld) For years, RadioShack made a habit of collecting customers’ contact information at checkout. Now, the bankrupt retailer is putting that data on the auction block.

A list of RadioShack assets for sale includes more than 65 million customer names and physical addresses, and 13 million email addresses. Bloomberg reports that the asset sale may include phone numbers and information on shopping habits as well.

The auction is already over, with Standard General—a hedge fund and RadioShack’s largest shareholder—reportedly emerging as the victor. But a bankruptcy court still has to approve the deal, and RadioShack faces a couple legal challenges in turning over customer data.

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