A hotel operator based in Northwest Indiana is the latest victim of a security breach.
This hacker attack could affect customers at several Chicago-area hotels.
White Lodging of Merrillville, Indiana, manages more than 150 Hilton, Marriott, Sheraton and Westin hotel franchises in 21 states.
The company says it is investigating how customer credit and debit card information was accessed from March 23, 2013 through the end of the year.
The investigation was first reported by security researcher Brian Krebs, who also broke the story of the Target security breach last month.
Krebs says sources tell him banks noticed a pattern of fraud seen only at specific Marriott hotels, in Austin, Chicago, Denver, Los Angeles, Louisville and Tampa.
“Turns out, the common thread among all of those Marriott locations is that they are managed” by White Lodging, he said.
White Lodging issued a statement Sunday night in response to the findings.
“An investigation is in progress, and we will provide meaningful information as soon as it becomes available,” White Lodging said in a statement.
Marriott said it will continue to monitor the situation.