Target: 40 million cards compromised

Shoppers enter a Target store in Dartmouth, Nova Scotia, on Friday, Nov. 29, 2013. Black Friday, thought to be the most important shopping day of the year in the United States, is having an impact on Canadian sales as retailers work to keep consumers home, north of the border.
Shoppers enter a Target store in Dartmouth, Nova Scotia, on Friday, Nov. 29, 2013. Black Friday, thought to be the most important shopping day of the year in the United States, is having an impact on Canadian sales as retailers work to keep consumers home, north of the border.

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    Target: 40 million cards compromised

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Jake Tapper talks to David Kennedy about a breach of credit and debit card data at discount retailer Target.