Investigators believe that overseas hackers were responsible for the cyber attack on the retailer Target that compromised up to 40 million payment cards. (REUTERS/Mike Blake/Files)
Target probe looks overseas, stolen cards online
The source declined to say how the hackers got in or where investigators believe they are based, saying investigators don’t want to show their hand to the criminals or afford them a chance to destroy evidence.
KrebsOnSecurity.com reported on Friday that cards stolen from Target were being offered at “card shops” for rates starting at $20 each and going to more than $100.
The retailer reported the breach on Thursday, a day after Krebs broke news of the attack. Target has declined to say how its systems were compromised and has provided few other details about the case.
“To date, we are hearing very few reports of actual fraud, but are closely monitoring the situation,” she said.
The hackers did not obtain PIN numbers used to access ATMs or the three or four-digit security codes that are printed on cards to verify online purchases, Snyder said.