The hotel chain has warned that anybody who stayed at certain Trump Hotel locations in Chicago, Honolulu, Las Vegas, Toronto, Miami, and New York between May 19 and June 2 of this year may have had their credit card data exposed to hackers.
The company says that the virus was located in point-of-sale systems such as credit card machines. As customers typed their payment information into the machine, the virus may have quietly pulled the data as well, although the company cannot be sure that any data was actually stolen.
"An independent forensic investigation has not conclusively determined that any particular customer's payment card information was taken," the company stated.
The Trump Hotel Collection is owned by real-estate mogul and current front-runner for the Republican presidential nomination, Donald Trump.
CNN Money says the hotel chain is offering one year of free identity fraud protection to any customers who may be affected by the hack.