Case file: MGM Resorts International
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 9, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Not stated in the filings
- Discovered
- No letter on file to read
- State and federal records
- 1 filing, Mar 7, 2026
- Residents counted
- 1 in 1 state (MA), latest filing per state
- Everyone affected
- No filing gives a total
- Information exposed
- Social Security number
- Offered to those affected
- No letter on file to read
- Third party named
- No letter on file to read
- Prior incidents
- 1 earlier incident on record for this organization
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| Massachusetts Massachusetts OCABR | Mar 7, 2026 | 1 | No dates to count between | Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
The statutes
- Massachusetts: no fixed period to notify residents from knowledge or reason to know of the breach, Mass. Gen. Laws ch. 93H, § 3. Attorney General and OCABR as soon as practicable and without unreasonable delay, every breach.
Prior incidents by MGM Resorts International
| Records | Breach window | Filed with | People |
|---|---|---|---|
| Oct 5, 2023 to Dec 5, 2023 | Sep 8, 2023 to Sep 12, 2023 | California, Oregon, California, Delaware | 0 total |
Filings more than six months apart are shown as separate incidents.
Filings by others that name MGM Resorts International
Clients of a breached vendor often file under their own names and name the vendor.
- Supplemental: MGM Resorts International, Delaware, Oct 5, 2023, 47,266
Sources and method
Records as published by Massachusetts OCABR. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 0 letters read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.