Marriott International (MAR) - Get Report said Monday that a U.K. agency proposed to fine the hotel operator nearly $124 million (99.2 million pounds) because of a customer-data breach at its Starwood unit.
The Bethesda, Md., company, which disclosed the hack last November, said it would contest the fine proposed by the U.K. Information Commissioner's Office.
"Marriott has been cooperating with the ICO throughout its investigation into the incident, which involved a criminal attack against the Starwood guest reservation database," President and CEO Arne Sorenson said in a statement.
The company had said in November that the breach exposed information on some 500 million people who made reservations at Starwood properties. A company update in March said records for no more than 383 million guests were involved in the incident.
The U.K. office calls itself an "independent authority set up to uphold information rights in the public interest, promoting openness by public bodies and data privacy for individuals."
Marriott shares were off 1.4% at $139.32.