Hyatt is warning its customers that it found malware on computers that operate the hotel and resort chain's payment-processing system.
Hyatt has not confirmed whether any information was actually stolen but warns customers to review their payment card statements for any unauthorized charges and report it to their card issuer immediately.
The company says as soon as the malware was discovered an investigation was launched and third-party cyber security experts were brought in.
Customers can find more information about the investigation and ask questions by visiting Hyatt's website or calling 1-877-218-3036 between 6 a.m. and 8 p.m.
