Social EngineeringHealthcareHealthcarePhishingStolen CredentialsCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDPHIHealth (basic)MediumContained

University of Missouri Health Care

bd_d462b2c219f0f4f3 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 4, 2020

Filed

Oct 17, 2020

To disclose

24 weeks

Affected

39state residents only

Linked

4 filings

Confidence

65%

Full breach record for University of Missouri Health Care →10 incidents on file

University of Missouri Health Care notified Montana residents of a phishing incident affecting employee email accounts. Unauthorized access occurred May 4-6, 2020. Potentially affected data included names, DOBs, SSNs, medical record numbers, and limited clinical information. No evidence of actual viewing or misuse was found. Kroll identity monitoring was offered.

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Incident timeline

discovery → filing · 24 weeks / 166 days

May 4, 2020

Begins

May 4, 2020

Discovered

Oct 17, 2020

Filed

vs. sector median

+13 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

New Hampshire State AGbd_6c4f866f73fe97d12020-09-18 · +29dVerified
Massachusetts State AGbd_103e5f85843923c12020-09-17 · +30dVerified
HHS OCRbd_822487258ea4e9052020-09-17 · +30dVerified

Name: University of Missouri Health Care
norm: university of missouri health care
Domain: muhealth.org

Name: University of Missouri Health Care
norm: university of missouri health care
Domain: muhealth.org
Industry: Healthcarellm

Discovered: May 4, 2020
Breach occurred: May 4, 2020 – May 6, 2020
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 20, 2020
Affected individuals: 39state-resident count only
Data types: Identity (basic)Government IDPHIHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: External
Initial access: phishing_link

During the incident: Secured the employees' email accounts
Engaged in an investigation to determine the nature and scope of the incident
Offered one year of complimentary identity monitoring services from Kroll
Changes made: Implemented additional security enhancements to the email environment
Reinforced staff education regarding how to identify and avoid suspicious emails
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(166 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGSep 17 · first

HHS OCRSep 17 · first

New Hampshire State AG+1d

Montana State AG+30d · this page

Pattern: first filing Sep 17 (MA), last Oct 17 (MT) — a 30-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://dojmt.gov/wp-content/uploads/MU-Health.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 17, 2020
Raw hash: f5ff28e59440edcd87dd9070d9212d5bd1be2adc0e2fdc82933ba5b5d71eba66

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityUniversity of Missouri Health Care

Victim entityUniversity of Missouri Health Care

Incidentdiscovered May 4, 2020

Stated responseSecured the employees' email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov