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Regulator-posted notice

Breach notice filed by MGM Resorts (October 2023)

Organization named: MGM Resorts Provisional: identity as filed, not yet matched to the directory

What the sources say

Delaware Data Security Breach Database (data.delaware.gov dir6-wx8v) Primary notice

Listed in the Delaware Data Security Breach Database with a notice date of Oct. 5, 2023.

Organization as reported
MGM Resorts
Incident dates as reported
Sept. 8, 2023
Discovery date as reported
Sept. 8, 2023
Notice date
Oct. 5, 2023
Observed by BreachRecords
2026-10-19 04:58 UTC (revision 29007, row:366)
Archived copy
Held in the private archive (provenance)

The listing records a filing with the agency; it is not a finding by the agency.

Figures, per source

  • 47,266 individuals affected (residents of the reporting state), according to the Delaware Data Security Breach Database, source date Oct. 5, 2023, revision observed 2026-10-19.

Each figure is one source's figure with the basis that source gave. Figures from different sources are shown side by side and are not added, averaged or chosen between.

Timeline

Source dates are the dates the sources give. Observation dates are when BreachRecords recorded each revision.

  • Notice date (Delaware Data Security Breach Database)
  • Observed by BreachRecords (revision 29007)
  • Approved by a reviewer

Organizations linked by a reviewer

  • MGM Resorts Named as the filer Provisional: identity as filed, not yet matched to the directory Linked 2026-11-03, method manual.

Archived evidence

  • db1f795b34839e756316077c5bc8c4af363da46537e8ed9d502c75c355a0e45c
    text/csv, 135,151 bytes, retrieved from Delaware Data Security Breach Database, 2026-10-19 04:58 UTC. Archived privately · Provenance · Source page

Records reflect source filings as of the dates shown. BreachRecords is not a regulator.

Request a correction

A record that disagrees with its source, names the wrong organization or duplicates another is corrected after review. This form is about Breach notice filed by MGM Resorts (October 2023). We acknowledge every request within two business days. We reply by email.

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