Shoppers at Lord & Taylor, Saks Fifth Avenue and Saks OFF 5th stores could have gotten more than they bargained for following news of a data breach at those retailers.
News of the intrusion, affecting 5 million card holders at the brands, which are owned by Hudson's Bay Company, emerged over the weekend.
The attack affected card payments made in some of the retailers' stores in North America. The company said it does not believe its e-commerce and digital platforms were affected.
Hackers have reportedly been selling the compromised information, which they began stealing in May, on the dark web.
The size of this breach is "significant," said CreditCards.com senior industry analyst Matt Schulz.
"People need to understand that when your information is out there, it's out there forever and the danger doesn't subside when a breach fades from the headlines," Schulz said.
It is also "troubling" how long the data leak went undetected, a sign that hackers are getting more sophisticated, said Eva Velasquez, president and CEO of the Identity Theft Resource Center.
You should take certain steps to monitor your information and protect your data from potential threats: