well, this target behind me in the cambria neighborhood opens up in about a half-hour.ing to people who shop here and they are dealing with the stress of holiday shopping. they don't want to have to think about identity theft or their account being drained. now, target officials say that up to 40 million accounts may have been compromised. if those have resolved the issue and is partnering with a third party forensic firm, customers who shopped from thanksgiving day all the way through december 15th are at risk. the information compromised includes customer names, credit or debit card numbers, the card's expiration date and the three-digit security code. >> i shop there all of the time. i just have to check on my bank. make sure everything is okay. >> i'm disappointed it's so easy for somebody to be able to do that with a company like target. >> reporter: the seat cret service is investigating how the unauthorized access occurred. a silicon valley expert said it could have been a skimming device attached to a credit card reader. he says it's more likely computer hackers