A “cybersecurity issue” at MGM Resorts has forced the famous hotel and casino company to shut down many of its systems, according to a statement the company posted just before noon ET on X (formerly Twitter). MGM replaced its homepage with a message apologizing for the site’s outage and providing a list of concierge phone numbers at several locations, like the Aria, The Cosmopolitan, Mandalay Bay, Bellagio, New Yor...