Last Friday (November 20, 2015), Starwood Hotels announced that it was hit with a payment card malware attack affecting 50 of its North American hotels.

The president of Starwood  Hotels Americas stated in a letter to customers dated Friday, “Based on the investigation, we discovered that the point of sale systems at certain Starwood Hotels were infected with malware, enabling unauthorized parties to access payment card data of some of our customers. We want you to know that the affected hotels have taken steps to secure customer payment card information, and the malware no longer presents a threat to customers using payment cards at our hotels.”

The affected hotels include various Sheraton Hotels, W Hotels, Westin Hotels, The Phoenician and the St. Regis Bal Harbour Resort.