HackingRetail & ConsumerRetailStolen CredentialsData ExfiltratedIdentity (basic)Government IDMediumResolved

MGM RESORTS INTERNATIONAL

bd_51ff5bcc7bd9732e · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 7, 2019

Filed

Sep 5, 2019

To disclose

9 weeks

Affected

19state residents only

Linked

2 filings

Confidence

65%

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

MGM Resorts International notified Montana residents of a July 7, 2019 data incident where an unauthorized individual accessed the network, downloaded customer names and driver's license numbers, and posted them on a closed forum. MGM reported to law enforcement and offered 12 months of credit monitoring.

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Incident timeline

discovery → filing · 9 weeks / 60 days

Jul 7, 2019

Begins

Jul 7, 2019

Discovered

Sep 5, 2019

Filed

vs. sector median

+1 wks slower

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

New Hampshire State AGbd_387b35a4502775052019-09-04 · +1dVerified

Name: MGM RESORTS INTERNATIONAL
norm: mgm resorts
Domain: mgmresorts.com

Name: MGM RESORTS INTERNATIONAL
norm: mgm resorts
Domain: mgmresorts.com
Industry: Retail & Consumerllm

Discovered: Jul 7, 2019
Breach occurred: Jul 7, 2019
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 30, 2019
Affected individuals: 19state-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: External
Regulator citations: reported the incident to law enforcement immediately
Initial access: valid_credentials

During the incident: Initiated an internal forensic investigation
Conducted an exhaustive investigation and search of the downloaded data
Implemented additional safeguards to improve further data security
Reported the incident to law enforcement immediately
Offering identity theft protection services through ID Experts
Changes made: Implemented additional safeguards to improve further data security related to external software incidents
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(60 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

New Hampshire State AGSep 4 · first

Montana State AG+1d · this page

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://dojmt.gov/wp-content/uploads/OCP/Consumer-Notice-26.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 5, 2019
Raw hash: 602ccdf9f80f8211d6e7a677f0c9adb7bc27d733d65cc41ae30c7a59b9aa4002

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMGM RESORTS INTERNATIONAL

Victim entityMGM RESORTS INTERNATIONAL

Incidentdiscovered Jul 7, 2019

Stated responseInitiated an internal forensic investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov