MASSACHUSETTSMisuseHealthcareHealthcareStolen CredentialsBusiness Associate (HIPAA)Customer Data InvolvedPHIHealth (basic)Identity (basic)Government IDHighContained

Mass General Brigham Health Plan

bd_711042fc3add84da · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Jun 28, 2024

To disclose

—

Affected

3,659

Linked

4 filings

Confidence

69%

Full breach record for Mass General Brigham Health Plan →3 incidents on file

Mass General Brigham Health Plan reported to HHS on 2024-06-28 a Unauthorized Access/Disclosure affecting 3,659 individuals. Breached information located on Other. An employee impermissibly shared system credentials with an unauthorized individual, exposing PHI including names, addresses, SSNs, and medical data. The CE provided credit monitoring, established a call center, sanctioned the employee, and retrained staff.

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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

Jun 28, 2024

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 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

New Hampshire State AGbd_085acbe4c33da1812024-06-28Candidate
Massachusetts State AGbd_afe15fd4587cff342024-06-28Verified
Vermont State AGbd_d33554cfd6b5ad332024-06-28Verified

Name: Mass General Brigham Health Plan
norm: mass general brigham health plan
Domain: massgeneralbrighamhealthplan.org
Industry: Insurance — Health

Name: Mass General Brigham Health Plan
norm: mass general brigham health plan
Domain: massgeneralbrighamhealthplan.org
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 3,659nationwide
Data types: PHIHealth (basic)Identity (basic)Government ID
HHS breach type: Unauthorized access or disclosure
Where the data lived: Other
Covered-entity type: Health plan
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: Internal
Regulator citations: Notified HHS
Initial access: valid_credentials

During the incident: Notified HHS
Notified affected individuals
Notified the media
Posted substitute notice on its website
Provided complimentary credit monitoring services
Established a call center for questions or concerns
Sanctioned the employee
Retrained all staff on the requirement to protect and secure sensitive data
Changes made: Retrained all staff on the requirement to protect and secure sensitive data
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.

Filing propagation · 4 filings · 3 states

View merged incident ↗

New Hampshire State AGJun 28 · first

Massachusetts State AGJun 28 · first

Vermont State AGJun 28 · first

HHS OCRJun 28 · 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://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 28, 2024
Raw hash: 9b1994117b17307e93e58524ed8e771c5c342e9a5384aeae5e5ea44336d1dac8

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Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMass General Brigham Health Plan

Victim entityMass General Brigham Health Plan

IncidentUnauthorized Access

Stated responseNotified HHS

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing