Hyatt Hotels Corp. disclosed that more than 250 of its properties worldwide, almost 100 in the United States alone, were affected by previously announced
malware attacks. The malicious software targeted payment card information—including cardholder names, card numbers, expiration dates and internal verification codes—from Aug. 13, 2015, to Dec. 8, 2015, plus a few attacks in late July. The point-of-sale system attacks occurred mainly at restaurants but also at spas, golf shops and a “limited number of front desks.” A Hyatt spokesperson told
BTN the company worked with third-party experts Mandiant and Kroll to complete the investigation. Hyatt does not believe other customer information was affected.