Major credit card attack at Target

Up to 40 million Target customers could be affected by a major credit and debit card attack.

A massive cyber hacker may have breached as many as 40 million credit and debit accounts. If you shopped at a Target store any time between black Friday and this past weekend, your information may have been stolen. Let's bring in chief business correspondent Christine Romans. Important distinction you've been drawing all morning,it's not online shopping, it's in the store.But still,many millions of people.

Yeah,up to 40 million accounts we are talking about here. And this is you know Target is now telling us this is resolved,but this was going on up to four days ago from November 27th to December 15th. If you shopped in a Target store, here is what it is somehow,hackers got access to all that information on your magnetic stripe of your credit card or debit card when you swiped it to that machine. They could potentially make counterfeit cards, they could potentially make a counterfeit card they could potentially go and get an ATM withdrawal if they were able to capture your PIN number from a debit card transaction at a point of sale at a Target ,Target this morning is telling us. if you think that you've been a victim of unauthorized activity you need to call this number 8668528680 and again Target is saying it is resolved,but this is something that we went on from the 27th basically black Friday weekend all the way until just four days ago.

It's amazing,how did they pull it off. I don't understand how they can get the magnetic strip information. I understand if you are at a restaurant someone writes down your numbers. This is no fly-by-night operation ,this is a very sophisticated hacker,very sophisticated. This is about the software inside those machines where you swipe your card. That software that magnetic stripe. Somehow these hackers were able to either tap in or able to put the software into those readers and read the information themselves. A lot information is on that card and the potential damage is very very great,you must keep very very close tabs on what you have,what's happening in your credit card and your debit card. This could be you know so experts this morning are telling me for a period of months now you need to be watching all the transactions on your cards because you could see counterfeit activity going forward. The Secret Service, the banks and Target all working together to try to make sure that this gets resolved and as few people hurt as possible.