SEE ALSO: MGM Resorts, parent company of Atlantic City's Borgata, dealing with cybersecurity 'issue' 10, led to MGM shutting down some casino and hotel computer systems at properties across the U.S. The incident, which was detected on Sept. NEW YORK - The data breach last month that MGM Resorts is calling a cyberattack is expected to cost the casino giant more than $100 million, the Las Vegas-based company said. Data breach involving Borgata's parent company expected to cost $100M
