UnknownHealthcareHealthcareGovernment IDHealth (basic)Medium

MCLAREN HEALTH CARE CORPORATION

bd_e1f2148c0d56b32a · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jun 20, 2025

To disclose

—

Affected

85state residents only

Linked

8 filings

Confidence

95%

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

McLaren Health Care reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-06-20. 85 Massachusetts residents were affected.

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Leak gap clock✗ Leak >180d

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

Incident timeline — partial

? — ?

Breach window unknown

Jun 20, 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 629 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

Vermont State AGbd_16315e097bb33c702025-06-20Verified
New Hampshire State AGbd_277031208ce9f1ec2025-06-20Verified
Indiana State AGbd_5ca789ddf9c80c462025-06-20Verified
Maine State AGbd_e56983ab307e30882025-06-20Verified

Show 3 more filings ↓up to 19d gap

HHS OCRbd_290c029e469208462025-06-24 · +4dVerified
Texas State AGbd_1484ed84002634352025-06-30 · +10dVerified
Illinois State AGbd_4885c58b706423f22025-06-01 · +19dCandidate

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

Name: MCLAREN HEALTH CARE CORPORATION
norm: mclaren health care
Domain: mclaren.org
Industry: Healthcareregulator portal

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 85state-resident count only
Data types: Government IDHealth (basic)
Data elements: Social Security numberMedical informationDriver's licence number
Stated not affected: Financial account numberPayment card number
The filing states these were not involved. Categories absent from both lists were not addressed either way.
Attack vector: Unknown

Compliance flags: Leak >180dMA credit monitoring due
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

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

Maine State AG+19d

Massachusetts State AG+19d · this page

HHS OCR+23d

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://www.mass.gov/doc/data-breach-report-2025/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 20, 2025
Raw hash: 0b58c49153a2e67111adcd458d026fec1bdfbb46e34429101e37de992057ec7d

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityMCLAREN HEALTH CARE CORPORATION

Victim entityMCLAREN HEALTH CARE CORPORATION

IncidentUnknown

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov