“Cybersecurity issue” at MGM Resorts resolved after casino, hotel systems go dark

Slot machines and computer screens were shut down at select hotels run by MGM Resorts International across the U.S. on Monday (Sept. 11) due to glitches caused by a “cybersecurity issue.”

The incident began Sunday (Sept. 10), and while the extent of the attack was not immediately known, the hack impacted reservation systems and casino floors in Las Vegas and beyond in states that included Maryland, Massachusetts, Michigan, Mississippi, New Jersey, New York and Ohio, according to MGM Resorts International.

“Promptly after detecting the issue, we quickly began an investigation with assistance from leading external cybersecurity experts,” the company said in a statement yesterday,

By Monday night, the FBI confirmed that MGM Resorts had asked for its help in dealing with the cyberattack, reports say.

The incident disrupted operations online as well. By Monday afternoon, the websites for all MGM Resorts International locations were offline. Instead, a website with phone numbers for each resort was available to guests.

Hotel visitors in Las Vegas documented the scene on X, formally known as Twitter.

X user “connor o'brien” (@ob1989) posted an image to the social media platform that showed darkened slot machines at the Aria Resort and Casino yesterday.  

“Many slot machines were non-functional at MGM Resorts property Aria at midday on Monday,” o’brien wrote.

Some Las Vegas guests staying at an MGM property told 8newsnow.com that they could not access their hotel rooms Sunday night using their digital key cards.

The issue, it appears, was resolved by late Monday night, according to an update that was posted by MGM Resorts.

“…our resorts, including dining, entertainment and gaming are currently operational, and continue to deliver the experiences for which MGM is known for,” the company wrote on X. “Our guests remain able to access their hotel rooms and Front Desk staff is ready to assist our guests as needed. We appreciate your patience.”

MGM Resorts has tens of thousands of hotel rooms in Las Vegas at properties including the MGM Grand, Bellagio, Cosmopolitan, Aria, New York-New York, Park MGM, Excalibur, Luxor, Mandalay Bay and Delano.

It also operates the Borgata hotel and casino in Atlantic City, as well as properties in states including Maryland, Massachusetts, Michigan, Mississippi, New York and Ohio.

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