Social EngineeringHealthcareHealthcarePhishingStolen CredentialsData ExfiltratedTargetedIdentity (basic)Health (basic)Financial accountLowActive

Greater Dallas Healthcare Enterprises

bd_f2293ee5aa6afaf3 · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 11, 2023

Filed

Sep 29, 2023

To disclose

7 weeks

Affected

4state residents only

Linked

2 filings

Confidence

65%

Full breach record for Greater Dallas Healthcare Enterprises →

Greater Dallas Healthcare Enterprises notified Montana residents of a data breach involving unauthorized access to a Microsoft Office 365 email account belonging to a medical assistant. The incident occurred between July 28 and August 15, 2023, and was discovered on August 11, 2023. Compromised data included names, DOBs, addresses, medical/treatment info, and billing details. No SSNs, driver's licenses, or bank account numbers were involved.

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Incident timeline

undetected · 14 days

discovery → filing · 7 weeks / 49 days

Jul 28, 2023

Begins

Aug 11, 2023

Discovered

Sep 29, 2023

Filed

vs. sector median

5 wks faster

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

HHS OCRbd_ab34399b9b9083152023-09-29Verified

Name: Greater Dallas Healthcare Enterprises
norm: greater dallas healthcare

Name: Greater Dallas Healthcare Enterprises
norm: greater dallas healthcare
Industry: Healthcarellm

Discovered: Aug 11, 2023
Breach occurred: Jul 28, 2023 – Aug 15, 2023
Undetected for: 14 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 29, 2023
Affected individuals: 4state-resident count only
Data types: Identity (basic)Health (basic)Financial account
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Steps were immediately taken to investigate and contain the threat
Security and monitoring capabilities are being enhanced
Systems are being hardened as appropriate
Changes made: Security and monitoring capabilities are being enhanced
Systems are being hardened as appropriate
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(49 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 ↗

HHS OCRSep 29 · first

Montana State AGSep 29 · first · 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-notification-letter-731.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 29, 2023
Raw hash: 3c880426c7c555b24469b5d5245ab48033f1478a061cea770d72f732fa458ef2

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityGreater Dallas Healthcare Enterprises

Victim entityGreater Dallas Healthcare Enterprises

Incidentdiscovered Aug 11, 2023

Stated responseSteps were immediately taken to investigate and contain the threat

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov