Social EngineeringHealthcareHealthcarePhishingCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDMediumContained

McKenzie County Healthcare System, Inc.

bd_f4e88d007ea9a5b1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 5, 2023

Filed

Apr 10, 2024

To disclose

27 weeks

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for McKenzie County Healthcare System, Inc. →2 incidents on file

McKenzie County Healthcare Systems, Inc. notified New Hampshire residents of a phishing incident involving an employee email account. Unauthorized access occurred between October 2-4, 2023, discovered on October 5, 2023. One NH resident was notified on April 10, 2024. Affected data includes names, addresses, and government IDs. The organization provided credit monitoring via Experian and implemented additional security safeguards.

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Incident timeline

undetected · 3 days

discovery → filing · 27 weeks / 188 days

Oct 2, 2023

Begins

Oct 5, 2023

Discovered

Apr 10, 2024

Filed

vs. sector median

+14 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

Vermont State AGbd_47a2ebba1576c3942024-04-10Candidate

Name: McKenzie County Healthcare System, Inc.
norm: mckenzie county healthcare system

Name: McKenzie County Healthcare System, Inc.
norm: mckenzie county healthcare system
Industry: Healthcarellm

Discovered: Oct 5, 2023
Breach occurred: Oct 2, 2023 – Oct 4, 2023
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 10, 2024
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: External
Regulator citations: Provided written notice of this incident to relevant state and federal regulatorsNotifying the U.S. Department of Health and Human Services and prominent media pursuant to the Health Insurance Portability and Accountability Act (HIPAA)
Initial access: phishing_link

During the incident: Moved quickly to investigate and respond to the incident
Assessed the security of McKenzie Health systems
Identified potentially affected individuals
Implemented additional safeguards and training to its employees
Provided access to credit monitoring services for individuals whose personal information was potentially affected by this incident, at no cost to these individuals
Provided impacted individuals with guidance on how to better protect against identity theft and fraud
Provided individuals with information on how to place a fraud alert and security freeze on one’s credit file
Provided contact details for the national consumer reporting agencies
Provided information on how to obtain a free credit report
Encouraged individuals to remain vigilant for incidents of fraud and identity theft by reviewing account statements and monitoring free credit reports
Encouraged individuals to contact the Federal Trade Commission, their state Attorney General, and law enforcement to report attempted or actual identity theft and fraud
Provided written notice of this incident to relevant state and federal regulators
Notifying the U.S. Department of Health and Human Services and prominent media pursuant to the Health Insurance Portability and Accountability Act (HIPAA)
Changes made: Implementing additional safeguards and training to its employees
Reviewing policies and procedures relating to data privacy and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 weeks(188 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 ↗

Vermont State AGApr 10 · first

New Hampshire State AGApr 10 · 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://mm.nh.gov/files/uploads/doj/remote-docs/mckenzie-county-healthcare-systems-20240410.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 10, 2024
Raw hash: 454e5ba817d74cb30605e36b7e959720f8bd76c2200b74f063aae52d29a2a7c2

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMcKenzie County Healthcare System, Inc.

Victim entityMcKenzie County Healthcare System, Inc.

Incidentdiscovered Oct 5, 2023

Stated responseMoved quickly to investigate and respond to the incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov