LOUISVILLE, Ky. (WDRB) -- PNC Bank will replace credit cards for all account holders who used them for purchases from Target during a security breach last fall.

"We have started notifying customers who used their credit cards at Target," said PNC spokesperson Marcey Zwiebel in Pittsburgh.

The bank is sending letters this week telling its customers to watch for a replacement credit card in the mail within seven to 10 days of the date on the letter, Zwiebel said.

The replacement cards will go to all credit card account holders who made purchases from Target from Nov. 27 through Dec. 15, 2013, regardless of whether their accounts were compromised.

Zwiebel could not say how many bank customers are affected. The replacement program applies to PNC Bank credit cards only. PNC will continue to handle security issues with debit cards as separate matters, Zwiebel said.

PNC credit card customers who receive the new cards will be asked to activate them immediately and destroy their old cards. The activation will cancel the previous cards.

Customers who do not activate the new card will find their old cards canceled April 30, Zwiebel said.

On Dec. 19, Target revealed a security breach in which customers' credit and debit card numbers, PINs, names, addresses and emails were compromised.

Target's CEO said on its website in February that, "cybercriminals stole the payment card information of roughly 40 million Target guests by infecting our point-of-sale system with malware." The hackers also stole 70 million pieces of the customers' information.

Credit card holders with questions can post a secure message on www.pnc.com, call 1-888-PNC-BANK or contact a bank branch in person.

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