MalwareRetail & ConsumerRetailRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedPIIIdentity (basic)Government IDMediumContained

Midwest Gaming & Entertainment, LLC

bd_27b3111fb388bae2 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 12, 2023

Filed

Dec 1, 2023

To disclose

16 weeks

Affected

313state residents only

Linked

8 filings

Confidence

66%

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

Midwest Gaming & Entertainment, d/b/a Rivers Casino Des Plaines, notified the New Hampshire Attorney General of a ransomware incident discovered on August 12, 2023. Approximately 313 New Hampshire residents were affected. The unauthorized actor gained access to systems and likely exfiltrated personal information, including names and Social Security numbers. The casino offered one year of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 16 weeks / 111 days

Aug 12, 2023

Begins

Aug 12, 2023

Discovered

Dec 1, 2023

Filed

vs. sector median

+8 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

Washington State AGbd_d0b58bdac38de6652023-12-04 · +3dVerified
California State AGbd_001623e5cfc427a52023-11-22 · +9dVerified
Massachusetts State AGbd_58992422311304a52023-11-22 · +9dVerified
Maine State AGbd_8564ee16c81511ef2023-11-22 · +9dVerified

Show 3 more filings ↓up to 12d gap

Montana State AGbd_f8f75959de3a4e4b2023-11-22 · +9dVerified
Delaware State AGbd_26609e321a0afb252023-11-20 · +11dCandidate
Oregon State AGbd_f01528a86e9638932023-12-13 · +12dVerified

Name: Midwest Gaming & Entertainment, LLC
norm: midwest gaming entertainment

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: 313state-resident count only
Data types: PIIIdentity (basic)Government ID
Data elements: Social Security number
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General

During the incident: Engaged third-party forensic specialists
Contained the threat
Investigated the incident
Ensured the security of its systems
Launched an investigation in consultation with law enforcement
Engaged third-party cybersecurity support
Changes made: Provided notification to affected residents
Provided substitute notice consisting of a website posting and media notice
Offered complimentary one-year membership with a credit monitoring service (Experian IdentityWorks Credit 3B)
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(111 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

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 · this page

Washington State AG+14d

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://mm.nh.gov/files/uploads/doj/remote-docs/midwest-gaming-entertainment-dba-rivers-casino-des-plaines-20231201.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 1, 2023
Raw hash: b4ba23c03ace74e792bb828ad0ef0e52aefc0645c1c35a61a70e8f42482bb7d9

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityMidwest Gaming & Entertainment, LLC

Victim entityMidwest Gaming & Entertainment, LLC

Incidentdiscovered Aug 12, 2023

Stated responseEngaged third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov