MGM Resorts last experienced a significant cybersecurity incident last year when the personal information of more than 140 million guests was shared on Telegram. It’s also unclear when MGM expects its computer systems to return online.Īn MGM spokesperson did not immediately respond to TechCrunch’s questions, though it’s unclear whether MGM employees currently have access to corporate email systems.

The websites of several of MGM’s regional resorts, including MGM Springfield in Massachusetts, MGM National Harbor and the Empire City Casino in New York, were all offline at the time of writing.įurther details about the incident, including the nature of the cyberattack and whether the hackers responsible have exfiltrated data from MGM’s systems, remain unknown. Guests are advised to call to make a reservation or to speak to a concierge.Ī source with knowledge of the incident told TechCrunch that all of MGM’s properties, including those outside of Las Vegas, appear to be affected by the incident. Now all the slots seem to be going down /iZtQjcGohpĪ notice on the MGM Resorts website - also affected by the ongoing outage - confirms that the incident impacts all of its Las Vegas resorts, including Aria, the Bellagio, Luxor, MGM Grand and Mandalay Bay.