DisclosureLens
HackingHospitalityRetail & ConsumerHospitalityCustomer Data InvolvedIdentity (basic)Government IDMediumResolved

MGM RESORTS INTERNATIONAL

bd_4e28f4a3e508d542 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 8, 2023

Filed

Oct 5, 2023

To disclose

27 days

Affected

0scope not determined

Linked

14 filings

Confidence

50%
Full breach record for MGM RESORTS INTERNATIONAL →4 incidents on file

MGM Resorts International filed a notice regarding an external system breach (hacking) that occurred from September 8 to September 12, 2023, and was discovered on September 8, 2023. The breach compromised personal identifiers, including names and driver's license or non-driver identification card numbers. While the filing indicates zero Maine residents were affected, the company offered credit monitoring and identity protection services through Experian.

Maine clockDiscovered Sep 8, 2023 → Filed with AG Oct 5, 202327d ✓ ME AG ≤30d27 days discovery → filing
⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 27 days

Sep 8, 2023

Begins

Sep 8, 2023

Discovered

Oct 5, 2023

Filed

This filing is one of 14 about the same incident.View merged incident

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
Delaware State AGOct 5 · first
SEC 8-KOct 5 · first
Montana State AGOct 5 · first
Maine State AGOct 5 · first · this page
South Carolina State AG+1d
California State AG+61d

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.