Understandably, this may be to prevent active attackers pivoting or malware spreading, but when organizations segment their networks effectively, this scale of downtime can usually be avoided. Likewise, with reservations and their websites still being down, the company continues to suffer massive financial losses. “For every minute the gaming floor was down, MGM was losing money.

“Until MGM provides more information on the breach, it’s not clear the exact reason why they decided to take this action, but it is a very costly move. Developed by MGM Resorts International, one of the world's most respected hotel and gaming companies, and invested in by Metro-Detroit Partner's LLC, MGM Grand Detroit is the first-ever Las Vegas-style destination to open in a major metropolitan core.

“In response to this incident, it looks like MGM decided to take all their systems offline, which is a routine move when organizations run such large and complex networks,” said Ryan McConechy, CTO at Barrier Networks. Out of town travelers and natives alike all hear the roar rising from the opulent 800-million MGM Grand Detroit. A rapid response could have prevented MGM Resorts from having to pay ransomware operators. If ransomware was involved, the system shutdown could have been enacted by the company’s security team in order to prevent further spread or buy time in order to remediate lost data.

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