MGM Resorts ( MGM) says it’s working with law enforcement and “took prompt action to protect our systems and data, including shutting down certain systems.” In MGM’s initial Sunday statement, the company explained that after detecting the cybersecurity issue, “we quickly began an investigation with assistance from leading external cybersecurity experts,” the company said on X, formerly known as Twitter. Justin Heath, a guest at MGM Grand in Las Vegas, told CNN on Monday that visitors were unable to charge purchases to their rooms, that digital hotel room keys were not working and that restaurants were taking only cash.

However, the statement did not specify the status of its systems, whether these operations were being handled manually, or whether some properties are still accepting cash only.Īs of Tuesday morning, the MGM Resorts website was still offline, with an apology message and a list of phone numbers for guests to reach their specific hotel concierge desk. Late Tuesday, the company posted an update, saying that its resorts’ dining, entertainment, and gaming “are currently operational.” The statement also thanked guests for their patience, saying “our guests remain able to access their hotel rooms.”

MGM Resorts has shut down some of its systems as a result of a “cybersecurity issue,” according to a company social media post on Monday.

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