MGM Resorts shuts down IT systems after cyberattack

MGM Resorts International disclosed coming that it is dealing pinch a cybersecurity rumor that impacted immoderate of its systems, including its main website, online reservations, and in-casino services, for illustration ATMs, slot machines, and in installments paper machines.

“MGM Resorts precocious identified a cybersecurity rumor affecting immoderate of nan Company’s systems,” nan institution announced connected its floor plan page connected X (formerly known arsenic Twitter).

The company says it started an investigation instantly aft detecting nan rumor “and took punctual action to protect our systems and data, including shutting down definite systems.”

MGM Resorts discloses cybersecurity issue
source: MGM Resorts International

It appears that nan outage started connected Sunday nighttime and machine systems successful nan resorts are presently down.

Reports online statement that nan institution switched to manual operations, pinch nan ATMs and in installments paper machines connected properties having been affected.

The MGM Resorts main website is besides down, presently informing that customers tin make edifice reservations “at immoderate of our destinations” complete nan phone.

MGM Rewards customers are besides affected, and they’ve been instructed to telephone a Member Services number betwixt 6 AM and 11 PM, Pacific time. 

MGM Resorts takes main website offline
source: BleepingComputer

All MGM websites utilizing nan aforesaid domain sanction arsenic nan main 1 - i.e. mgmresorts.com - person been offline for hours.

BleepingComputer checked respective of them, and they each showed nan aforesaid message, instructing visitors to telephone a telephone number, including MGM National Harbor, Empire City Casino, MGM Springfield, MGM Grand Detroit, Beau Rivage, and The Borgata.

If you person immoderate accusation connected this attack or other attacks, you can contact us confidentially via Signal at 646-961-3731.

According to FOX5, immoderate guests reported that their room keys were not working.

Local Las Vegas media outlet Vital Vegas besides reports that nan slot machines are not functional, alternatively displaying a temporarily unavailable message.

BleepingComputer has confirmed that nan MGM Rewards app is nary longer working, advising members to spot nan beforehand table for assistance. However, nan cyberattack does not effect different MGM apps, specified arsenic MGM+ and nan MGM sportsbook..

MGM Rewards app offline
source: BleepingComputer

The quality of nan cybersecurity incident has not been disclosed publicly, and nan attacker’s intent remains unknown.

This is nan 2nd clip MGM Resorts had confirmed a cybersecurity incident since 2019 erstwhile 1 of nan company’s unreality services was breached, and hackers stole much than 10 cardinal customer records.

The institution confirmed nan breach successful 2020 aft an archive pinch stolen information - including guests' names, dates of birth, email addresses, telephone numbers, and beingness addresses, was shared freely connected a hacker forum.

This is simply a processing story

Update 9/11/23: Added further accusation astir disrupted services.