Following information breaches at retailers like Target at Neiman Marcus, cyber security experts believe at least six more U.S. merchants may have been hacked.
The breach at Neiman Marcus began last summer and wasn't contained until the weekend of Jan. 11.
"I mean, it could be another 100 to 200 million credit cards that are out there, already breached," said Keith Squires with the Pathmaker Group.
Squires helps companies avoid hackers, and he says in the case of Neiman Marcus and others that haven't been named, the breaches may have been going on for six months.
Consumers are worried about how safe their money is.
"You know, do we go back to all cash?" said consumer Diane Hunt. "Is that real? And then I saw these new little cards that were cash cards that were out also, so it just kind of makes you wonder where we're going next."
Squires says one of the best things folks can do is to monitor their accounts online for suspicious activity, and people can also be hacked online at home.
So, what happens to stolen account information? Someone pays $50-$120 for it.
"They go reproduce cards or they use them to purchase online, and then they'll buy things and just turn right around and sell them on eBay," said Squires.
KDFW FOX 4
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