NEW YORK - The Secret Service says it is investigating a credit and debit card data theft at Target stores where millions of cards have been compromised, spokesman Brian Leary confirmed.
Leary declined to provide further details.
According to a news release from the company, approximately 40 million credit and debit card accounts used between Nov. 27 and Dec. 15, 2013 could be affected by the security breach.
Target officials say the security issue has been resolved so now "guests can shop with confidence."
They have hired a third-party forensics firm to find out how it happened and the Minneasota-based company also says it's "working with law enforcement to bring those responsible to justice."
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A MasterCard representative referred questions to Target.
Target has 1,797 stores in the U.S. and 124 in Canada.
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