MasterCard and Visa said Friday that they had notified issuers of its credit cards of a potential breach of the security of customer accounts. The companies did not say how many customers were affected.
Global Payments Inc., which processes credit card transactions for stores, said it had detected a breach of card data in early March. Breaches of card data can lead to identity theft and unauthorized charges.
Global Payments said it had alerted federal law enforcement and was investigating. Spokeswoman Amy Corn would not say whether cards besides Visa and MasterCard were affected.