MasterCard and Visa have confirmed to the California and Nevada Credit Union Leagues that card issuers are allowed under their network rules to divulge to members the names of merchants involved in data breaches, giving credit unions and other card issuers a significant opportunity to mitigate some of the reputational damage that often comes with breach-related card reissuance.

“Most credit unions are under the belief that the networks prohibit, either by contractual obligation or by network rule, financial institutions from releasing the name or identity of a merchant that has been identified as responsible for a payment card breach,” the Leagues’ President/CEO Diana Dykstra said in a May 18 letter to Visa and MasterCard.

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