Target customers who shopped in stores over Black Friday weekend may have had their credit and debit card data stolen.
It's a potentially massive breach that may have affected every Target store in the country.
The Secret Service is investigating the breach, the Wall Street Journal reported, quoting a spokesman who would not provide any other details.
Initials report about the hacking came from the blog Krebs on Security, whose author is a former Washington Post reporter and computer security expert:
"According to sources at two different top 10 credit card issuers, the breach extends to nearly all Target locations nationwide, and involves the theft of data stored on the magnetic stripe of cards used at the stores."
Krebs quote unnamed sources who say the breach is thought to have extended from just after Thanksgiving 2013 as far as December 15th.
"The thieves gained access to data that is stored on the magnetic stripe on the back of the credit and debit cards, according to the people familiar with the breach. The stripe contains an enormous amount of information, including account numbers, but it wasn't immediately known which data was vulnerable."
Stay with us for more on this developing story.
FOX 13 / WTVT-TV
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