MICHIGANHackingHealthcareHealthcareCustomer Data InvolvedPHIHealth (basic)Identity (basic)High

MCLAREN HEALTH CARE CORPORATION

bd_290c029e46920846 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Jun 24, 2025

To disclose

—

Affected

743,131

Linked

8 filings

Confidence

69%

Full breach record for MCLAREN HEALTH CARE CORPORATION →4 incidents on file

McLaren Health Care reported to HHS on 2025-06-24 a Hacking/IT Incident affecting 743131 individuals. Breached information located on Network Server.

J jump to incidentP pin to compareR raw source

Leak gap clock✗ Leak >180d

⚠ 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

Jun 24, 2025

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 8 about the same incident.View merged incident

A leak claim by alphv about this victim predates this filing by 633 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

Vermont State AGbd_16315e097bb33c702025-06-20 · +4dVerified
New Hampshire State AGbd_277031208ce9f1ec2025-06-20 · +4dVerified
Indiana State AGbd_5ca789ddf9c80c462025-06-20 · +4dVerified
Massachusetts State AGbd_e1f2148c0d56b32a2025-06-20 · +4dVerified

Show 3 more filings ↓up to 23d gap

Maine State AGbd_e56983ab307e30882025-06-20 · +4dVerified
Texas State AGbd_1484ed84002634352025-06-30 · +6dVerified
Illinois State AGbd_4885c58b706423f22025-06-01 · +23dCandidate

Name: MCLAREN HEALTH CARE CORPORATION
norm: mclaren health care
Domain: mclaren.org
Industry: Health Care Services

Name: MCLAREN HEALTH CARE CORPORATION
norm: mclaren health care
Domain: mclaren.org
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 743,131nationwide
Data types: PHIHealth (basic)Identity (basic)
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Healthcare provider
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified HHS

Compliance flags: Leak >180dHHS 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.

Filing propagation · 8 filings · 8 states

View merged incident ↗

Illinois State AGJun 1 · first

Vermont State AG+19d

New Hampshire State AG+19d

Indiana State AG+19d

Massachusetts State AG+19d

Maine State AG+19d

HHS OCR+23d · this page

Texas State AG+29d

Pattern: first filing Jun 1 (IL), last Jun 30 (TX) — a 29-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://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: Jun 24, 2025
Raw hash: 1225ace8d6054f52634de0b928b75d458c220471c5005e92f5aabe222598857f

AI-assisted summary above. The structured extract on this page was generated from the document below. Inspect the source to verify or correct any field.

text/html978 B

Download View at source

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityMCLAREN HEALTH CARE CORPORATION

Victim entityMCLAREN HEALTH CARE CORPORATION

IncidentUnauthorized Access

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing