MGM Resorts International said it expects to take a $100 million hit as part of the fallout of a cyberattack that has most significantly impacted its Las Vegas operations.

MGM first acknowledged detection of the issue in a press release last month. On Thursday, the company disclosed in a regulatory filing it “shut down its systems to mitigate risk to customer information, which resulted in disruptions at some of the company’s properties but allowed the company to prevent the criminal actors from accessing any customer bank account numbers or payment card information.”

MGM said some personal information was breached for business conducted prior to March 2019, including names, phone numbers, email and postal addresses, genders, dates of birth, and driver’s license numbers. For a limited number of customers, Social Security numbers and passport numbers were also obtained.