More than 60 hours after a brazen cyberattack targeted the computer systems at one of the world’s largest casino-hotel chains, patrons trying to access the MGM Resorts website are still met by a splash page that apologizes for the inconvenience.
Prominent among MGM’s stable of 19 U.S. properties are a dozen of the most iconic casino hotels in Las Vegas—including the Bellagio, Mandalay Bay and the Cosmopolitan.
Since the attack was discovered on Sunday evening, it has wreaked havoc on MGM’s operations, forcing guests to wait hours to check in and crippling electronic payments, digital key cards, slot machines, ATMs and paid parking systems.
On Tuesday night, VX-Underground, a malware research group with nearly 229,000 followers on X, posted that ransomware-as-a-service group ALPHV, also known as BlackCat, claimed responsibility for executing the attack by using social engineering to identify on LinkedIn an MGM employee who worked in IT support.
