MalwareRetail & ConsumerRetailRansomwareData ExfiltratedRansom DemandedIdentity (basic)Government IDFinancial accountPHIHealth (basic)HighContained

Midwest Gaming & Entertainment, LLC

bd_d0b58bdac38de665 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 12, 2023

Filed

Dec 4, 2023

To disclose

16 weeks

Affected

1,946state residents only

Linked

8 filings

Confidence

69%

Full breach record for Midwest Gaming & Entertainment, LLC →2 incidents on file

Midwest Gaming & Entertainment, LLC dba Rivers Casino Des Plaines notified Washington AG of a ransomware incident discovered on August 12, 2023. Unauthorized access likely resulted in the exfiltration of personal information (names, SSNs, driver's licenses, financial accounts, PHI) of 1,946 Washington residents. Notifications were sent starting November 20, 2023, including one year of credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d16 weeks discovery → filing

Incident timeline

discovery → filing · 16 weeks / 114 days

Aug 12, 2023

Begins

Aug 12, 2023

Discovered

Dec 4, 2023

Filed

vs. sector median

+9 wks slower

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

New Hampshire State AGbd_27b3111fb388bae22023-12-01 · +3dVerified
Oregon State AGbd_f01528a86e9638932023-12-13 · +9dVerified
California State AGbd_001623e5cfc427a52023-11-22 · +12dVerified
Massachusetts State AGbd_58992422311304a52023-11-22 · +12dVerified

Show 3 more filings ↓up to 14d gap

Maine State AGbd_8564ee16c81511ef2023-11-22 · +12dVerified
Montana State AGbd_f8f75959de3a4e4b2023-11-22 · +12dVerified
Delaware State AGbd_26609e321a0afb252023-11-20 · +14dCandidate

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

Name: Midwest Gaming & Entertainment, LLC
norm: midwest gaming entertainment
Also named: Midwest Gaming & Entertainment, LLCdba oflegal entity
Rivers Casino Des Plainesdba oftrade name
Industry: Retail & Consumerllm

Discovered: Aug 12, 2023
Breach occurred: Aug 12, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 20, 2023
Affected individuals: 1,946state-resident count only
Data types: Identity (basic)Government IDFinancial accountPHI
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthPassport numberHealth insurance ID
WA-stated cause: Cyberattack
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified Washington Attorney General Consumer Protection Division

During the incident: Acted quickly to contain the threat, investigate, and ensure the security of its systems with the assistance of third-party forensic specialists
Engaged third-party cybersecurity support to assist with containing the incident
Immediately launched an investigation in consultation with law enforcement and outside cybersecurity professionals
Changes made: Offering the affected residents whose Social Security number was potentially impacted by the incident with complimentary one-year membership with a credit monitoring service
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(114 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

Delaware State AGNov 20 · first

California State AG+2d

Massachusetts State AG+2d

Maine State AG+2d

Montana State AG+2d

New Hampshire State AG+11d

Washington State AG+14d · this page

Oregon State AG+23d

Pattern: first filing Nov 20 (DE), last Dec 13 (OR) — a 23-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.

Source URL: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM16004.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 4, 2023
Raw hash: 2a45168bb10fb9008077c36835b1d80860844b6e2384eb8c57f024ee006c6e94

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityMCDONALD HOPKINS LLC

Victim entityMidwest Gaming & Entertainment, LLC

Incidentdiscovered Aug 12, 2023

Stated responseActed quickly to contain the threat, investigate, and ensure the security of its systems with the assistance of third-party forensic specialists

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com