MGM Resorts International said it has identified a cyberattack that is affecting some of the company’s systems, as reports trickled in about slot machines and guest check-in being disrupted.
(Bloomberg) — MGM Resorts International said it has identified a cyberattack that is affecting some of the company’s systems, as reports trickled in about slot machines and guest check-in being disrupted.
The Las Vegas-based company said it has notified law enforcement and began an investigation with the help of external cybersecurity experts. MGM Resorts also said it took “prompt action to protect our systems and data, including shutting down certain systems.”
A representative couldn’t immediately be located for comment, but the company previously told the Associated Press that the incident began Sunday.
Shares of MGM Resorts fell 2.4% in New York on Monday.
The extent of the hack wasn’t immediately known. A message on MGM’s website, which lists numbers for concierges at 19 hotels across the country, says the site “is currently unavailable.”
A receptionist who answered the phone at Mandalay Bay, an MGM resort in Las Vegas that hosts the annual Black Hat cybersecurity conference, said guests had been unable to check in for a short time earlier in the day because the hotel couldn’t get into its system. They were now able to check in, said the employee, who declined to provide his name.
Several accounts on the social media platform X provided further details of the fallout from the attack, though the reports couldn’t immediately be substantiated.
One, attributed to John Brennan at the handle @qpr01, said he was in the Borgata casino in Atlantic City, New Jersey. “All computer systems are down. Slots will not accept tickets, and anyone trying to cash out is getting the Handpay message regardless of amount,” he said in his post on X.
A receptionist who answered the phone at the Borgata confirmed his account, saying she was told when she got into work at 4 p.m. on Monday that the office internet had gone down around four hours earlier.
“The system is still down,” she said on Monday evening, adding that slot machines were only taking cash as a result. She said most guests were understanding but that “a couple are angry.”
An X account with the handle @keithrmiller2, in a reply to MGM Resorts announcement about the incident, said the problem was “pretty widespread.” “We can’t check in, pay with card, use comps, receive our gifts, get tickets out of machines,” he said in his post, without revealing where he was.
MGM Resorts was the victim of a July 2019 data breach that exposed the personal information of as many as 10.6 million customers.
(Updates with additional information starting in fourth paragraph.)
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