MICHIGANAccidentalHealthcareFinancial ServicesHealthcareMisdeliveryCustomer Data InvolvedHealth (basic)Identity (basic)MediumResolved

University of Michigan Health Plan

bd_3a2c81e51b92ba5f · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Feb 26, 2026

To disclose

—

Affected

2,315

Confidence

97%

Full breach record for University of Michigan Health Plan →

University of Michigan Health Plan reported to HHS on 2026-02-26 an Unauthorized Access/Disclosure affecting 2,315 individuals. A workforce member inadvertently sent PHI — including names, dates of birth, and treatment information — to an unauthorized individual via email. The CE notified HHS and affected individuals. OCR provided technical assistance regarding the HIPAA Rules. Breached information located on Email. Business associate: not present.

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HIPAA clock✓ HHS notified

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

⚠ No discovery dateThe OCR public portal omits the discovery date, so the 60-day notification clock cannot be evaluated from this source — only that the filing was submitted.

Incident timeline — partial

? — ?

Breach window unknown

Feb 26, 2026

Filed

No interval is drawn: no breach start or discovery date is on record for this filing.

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed2,315 affectedView incident

Name: University of Michigan Health Plan
norm: university of michigan health plan
Industry: Insurance — Health

Name: University of Michigan Health Plan
norm: university of michigan health plan
Industry: Insurance — Health
Industry: Healthcaresource defaultFinancial Servicesllm

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 2,315nationwide
Data types: Health (basic)Identity (basic)
HHS breach type: Unauthorized access or disclosure
Where the data lived: Email
Covered-entity type: Health plan
Attack vector: Unauthorized Access
Threat actor: Internal
Regulator citations: OCR provided technical assistance regarding the HIPAA Rules.
Initial access: insider_action

During the incident: Notified HHS
Notified affected individuals
Source: Quoted from the filing itself, not independently verified.

Compliance flags: HHS notified
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.
Clock breakdown: Statute Window Elapsed Threshold Status
HIPAA
Discovered: not extracted
→ Notified: not extracted
— regulatory submission HHS notified

Statute	Window	Elapsed	Threshold	Status
HIPAA	Discovered: not extracted → Notified: not extracted	—	regulatory submission	HHS notified

Status: No extraction artifact recorded for this disclosure.

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://ocrportal.hhs.gov/ocr/breach/breach_report.jsf
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Feb 26, 2026
Raw hash: 472b2fb5341b2378f0781163f6b7f5da46526e7c25a115d17e3955f42763fd46

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Reporting entityUniversity of Michigan Health Plan

Victim entityUniversity of Michigan Health Plan

IncidentUnauthorized Access

Stated responseNotified HHS

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing