HackingRetail & ConsumerRetailStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Boyd Gaming Corporation

bd_5466f54815e13dc0 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 6, 2025

Filed

Oct 1, 2025

To disclose

25 days

Affected

25state residents only

Linked

10 filings

Confidence

66%

Full breach record for Boyd Gaming Corporation →

Boyd Gaming Corporation reported a cyber incident in Maine where unauthorized actors accessed systems between Sept 5-7, 2025. Discovered Sept 6, 2025. Personal info of 25 Maine residents, including names, SSNs, and driver's licenses, was exfiltrated. Notifications sent Sept 24, 2025, offering 2 years of identity protection.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Sep 6, 2025 → Filed with AG Oct 1, 202525d ✓ ME AG ≤30d25 days discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 1 days

discovery → filing · 25 days

Sep 5, 2025

Begins

Sep 6, 2025

Discovered

Oct 1, 2025

Filed

vs. sector median

5 wks faster

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Illinois State AGbd_7fc93624cae46c4c2025-10-01Verified
California State AGbd_d00c1c2465555cb62025-10-01Verified
Vermont State AGbd_4d481001b07bc0f12025-10-02 · +1dVerified
Texas State AGbd_5385549096954c1e2025-10-02 · +1dVerified

Show 5 more filings ↓up to 8d gap

Iowa State AGbd_fa49a9bb13c2a59c2025-10-02 · +1dVerified
New Hampshire State AGbd_08fb36c9e929cb422025-10-06 · +5dVerified
Indiana State AGbd_106fff4bfd61efe62025-09-24 · +7dVerified
Montana State AGbd_b508b0707b18975f2025-09-24 · +7dVerified
SEC 8-Kbd_1a7e1ea1df6ca8ff2025-09-23 · +8dVerified

Name: Boyd Gaming Corporation
norm: boyd gaming

Name: Boyd Gaming Corporation
norm: boyd gaming
Industry: Retail & Consumerllm

Discovered: Sep 6, 2025
Breach occurred: Sep 5, 2025 – Sep 7, 2025
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Sep 24, 2025
Affected individuals: 25state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified Maine Attorney GeneralCoordinated with federal law enforcement
Initial access: valid_credentials

During the incident: Terminated the unauthorized third party’s access to the affected portion of its environment
Engaged external cybersecurity experts / third-party forensic experts to assist with the investigation and response
Coordinated with federal law enforcement
Changes made: Blocking known indicators of compromise
Conducting an enterprise-wide password reset
Fortifying password reset protocols
Expanding use of encryption
Enhancing security monitoring and logging capabilities
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 days(25 days from discovery to filing)
Compliance flags: ME AG ≤30d · 25d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Sep 6, 2025
→ Filed with AG: Oct 1, 2025
25d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Sep 6, 2025 → Filed with AG: Oct 1, 2025	25d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 9 states

View merged incident ↗

SEC 8-KSep 23 · first

Indiana State AG+1d

Montana State AG+1d

Illinois State AG+8d

California State AG+8d

Maine State AG+8d · this page

Vermont State AG+9d

Texas State AG+9d

Iowa State AG+9d

New Hampshire State AG+13d

Pattern: first filing Sep 23, last Oct 6 (NH) — a 13-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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/cc4943dd-1067-4966-a6ef-338666abc3d9.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 1, 2025
Raw hash: fa821145c462444368b2bfa94e4fcd5b4bc85f306f9d8d00fcbefff9bbff0170

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityBoyd Gaming Corporation

Victim entityBoyd Gaming Corporation

Incidentdiscovered Sep 6, 2025

Stated responseTerminated the unauthorized third party’s access to the affected portion of its environment

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov