DisclosureLens
HackingHospitalityRetail & ConsumerHospitalityCustomer Data InvolvedData ExfiltratedIdentity (basic)Government IDMediumContained

MGM RESORTS INTERNATIONAL

bd_0171facdc96060a9 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Dec 5, 2023

To disclose

—

Affected

Not disclosed

Linked

14 filings

Confidence

65%
Full breach record for MGM RESORTS INTERNATIONAL →4 incidents on file

MGM Resorts International disclosed that an unauthorized third party obtained personal information of some customers on September 11, 2023. The breach window is listed as September 8-12, 2023. Affected data includes names, contact info, gender, date of birth, and driver's license numbers; for a limited number of customers, Social Security and passport numbers were also affected. Passwords, bank accounts, and payment card information were not affected. MGM shut down systems, engaged cybersecurity experts, and is offering credit monitoring.

Leak gap clock⏱ Leak >30d
⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline

Sep 8, 2023

Begins

Dec 5, 2023

Filed

This filing is one of 14 about the same incident.View merged incident
A leak claim by alphv about this victim predates this filing by 81 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Show 6 more filings ↓up to 61d gap

Showing first 10 of 13 linked disclosures.

Filing propagation · 11 filings · 10 states

View merged incident ↗
Washington State AGOct 5 · first
Oregon State AGOct 5 · first
Vermont State AGOct 5 · first
Massachusetts State AGOct 5 · first
Indiana State AGOct 5 · first
Maine State AGOct 5 · first
Delaware State AGOct 5 · first
SEC 8-KOct 5 · first
Montana State AGOct 5 · first
South Carolina State AG+1d
California State AG+61d · this page

Pattern: first filing Oct 5 (WA), last Dec 5 (CA) — a 61-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 13 — the full spread may be wider.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.