The Domain Hotel, a hospitality provider in Sunnyvale, California, disclosed a data breach involving its third-party reservation service provider, Sabre Hospitality Solutions. Between August 10, 2016, and March 9, 2017, an unauthorized party accessed Sabre's central reservations system, viewing credit card summary pages for certain hotel reservations. The Domain Hotel learned of the incident on July 12, 2017. Affected data included cardholder names, card numbers, expiration dates, and potentially card security codes, along with guest contact information. No Social Security numbers or government IDs were involved. The hotel notified affected guests and worked with Sabre to improve data security. Sabre notified law enforcement and credit bureaus.