{ "id": "068856a4-077c-4a18-b471-6876b672de30", "created_at": "2026-04-06T00:13:44.979305Z", "updated_at": "2026-04-10T03:22:06.495937Z", "deleted_at": null, "sha1_hash": "dd1b57df1237ec765171b6eba3b0d60aeab24591", "title": "MGM Resorts shuts down IT systems after cyberattack", "llm_title": "", "authors": "", "file_creation_date": "0001-01-01T00:00:00Z", "file_modification_date": "0001-01-01T00:00:00Z", "file_size": 4852410, "plain_text": "MGM Resorts shuts down IT systems after cyberattack\r\nBy Ionut Ilascu\r\nPublished: 2023-09-11 · Archived: 2026-04-05 18:48:47 UTC\r\nMGM Resorts International disclosed today that it is dealing with a cybersecurity issue that impacted some of its systems,\r\nincluding its main website, online reservations, and in-casino services, like ATMs, slot machines, and credit card machines.\r\n“MGM Resorts recently identified a cybersecurity issue affecting some of the Company’s systems,” the company announced\r\non its profile page on X (formerly known as Twitter).\r\nThe company says it started an investigation immediately after detecting the issue “and took prompt action to protect our\r\nsystems and data, including shutting down certain systems.”\r\nhttps://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/\r\nPage 1 of 7\n\n0:00\r\nhttps://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/\r\nPage 2 of 7\n\nVisit Advertiser websiteGO TO PAGE\r\nMGM Resorts discloses cybersecurity issue\r\nsource: MGM Resorts International\r\nIt appears that the outage started on Sunday night and computer systems in the resorts are currently down.\r\nReports online note that the company switched to manual operations, with the ATMs and credit card machines on properties\r\nhaving been affected.\r\nThe MGM Resorts main website is also down, currently informing that customers can make hotel reservations “at any of our\r\ndestinations” over the phone.\r\nMGM Rewards customers are also affected, and they’ve been instructed to call a Member Services number between 6 AM\r\nand 11 PM, Pacific time. \r\nhttps://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/\r\nPage 3 of 7\n\nMGM Resorts takes main website offline\r\nsource: BleepingComputer\r\nAll MGM websites using the same domain name as the main one - i.e. mgmresorts.com - have been offline for hours.\r\nBleepingComputer checked several of them, and they all showed the same message, instructing visitors to call a phone\r\nnumber, including MGM National Harbor, Empire City Casino, MGM Springfield, MGM Grand Detroit, Beau Rivage, and\r\nThe Borgata.\r\nIf you have any information on this attack or other attacks, you can contact us confidentially via Signal at 646-961-3731.\r\nAccording to FOX5, some guests reported that their room keys were not working.\r\nLocal Las Vegas media outlet Vital Vegas also reports that the slot machines are not functional, instead displaying a\r\ntemporarily unavailable message.\r\nhttps://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/\r\nPage 4 of 7\n\nBleepingComputer has confirmed that the MGM Rewards app is no longer working, advising members to see the front desk\r\nfor assistance. However, the cyberattack does not impact other MGM apps, such as MGM+ and the MGM sportsbook..\r\nhttps://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/\r\nPage 5 of 7\n\nMGM Rewards app offline\r\nsource: BleepingComputer\r\nThe nature of the cybersecurity incident has not been disclosed publicly, and the attacker’s purpose remains unknown.\r\nThis is the second time MGM Resorts had confirmed a cybersecurity incident since 2019 when one of the company’s cloud\r\nservices was breached, and hackers stole more than 10 million customer records.\r\nThe company confirmed the breach in 2020 after an archive with stolen data - including guests' names, dates of birth, email\r\naddresses, phone numbers, and physical addresses, was shared freely on a hacker forum.\r\nThis is a developing story\r\nUpdate 9/11/23: Added further information about disrupted services.\r\nhttps://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/\r\nPage 6 of 7\n\nAutomated Pentesting Covers Only 1 of 6 Surfaces.\r\nAutomated pentesting proves the path exists. BAS proves whether your controls stop it. Most teams run one without the\r\nother.\r\nThis whitepaper maps six validation surfaces, shows where coverage ends, and provides practitioners with three diagnostic\r\nquestions for any tool evaluation.\r\nSource: https://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/\r\nhttps://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/\r\nPage 7 of 7", "extraction_quality": 1, "language": "EN", "sources": [ "ETDA" ], "references": [ "https://www.bleepingcomputer.com/news/security/mgm-resorts-shuts-down-it-systems-after-cyberattack/" ], "report_names": [ "mgm-resorts-shuts-down-it-systems-after-cyberattack" ], "threat_actors": [], "ts_created_at": 1775434424, "ts_updated_at": 1775791326, "ts_creation_date": 0, "ts_modification_date": 0, "files": { "pdf": "https://archive.orkl.eu/dd1b57df1237ec765171b6eba3b0d60aeab24591.pdf", "text": "https://archive.orkl.eu/dd1b57df1237ec765171b6eba3b0d60aeab24591.txt", "img": "https://archive.orkl.eu/dd1b57df1237ec765171b6eba3b0d60aeab24591.jpg" } }