MASSACHUSETTSHackingHealthcareHealthcareBusiness Associate (HIPAA)Customer Data InvolvedPHIHealth (basic)Identity (basic)Government IDFinancial accountCriticalContained

The University of Massachusetts Chan Medical School

bd_076d1e70ad37c526 · schema v1 · pii pii-v1

Severity

Critical

Discovered

—

Filed

Aug 21, 2023

To disclose

—

Affected

135,394

Linked

2 filings

Confidence

68%

Full breach record for The University of Massachusetts Chan Medical School →7 incidents on file

The University of Massachusetts Chan Medical School reported to HHS on 2023-08-21 a Hacking/IT Incident affecting 135,394 individuals. Breached information located on Network Server. PHI included names, DOBs, addresses, SSNs, diagnoses, medications, and financial data.

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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

Aug 21, 2023

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 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_eadb76bab0f2eaa82023-08-22 · +1dVerified

Name: The University of Massachusetts Chan Medical School
norm: the university of massachusetts chan medical school
Industry: Health Care Services

Name: The University of Massachusetts Chan Medical School
norm: the university of massachusetts chan medical school
Industry: Health Care Services
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 135,394nationwide
Data types: PHIHealth (basic)Identity (basic)Government IDFinancial account
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Business associate
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Regulator citations: Notified HHS
Initial access: exploit_public_facing

During the incident: Provided complimentary credit monitoring services
Implemented additional administrative, technical, and security safeguards to better protect its PHI
Changes made: Implemented additional administrative, technical, and security safeguards to better protect its PHI
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 · 2 filings

View merged incident ↗

HHS OCRAug 21 · first · this page

Massachusetts State AG+1d

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: Aug 21, 2023
Raw hash: 03caed97befff0d21c7e3ef5e66820e3df51fd25d19bafac8eb1ca2daf5b3925

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Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityThe University of Massachusetts Chan Medical School

Victim entityThe University of Massachusetts Chan Medical School

IncidentUnauthorized Access

Stated responseProvided complimentary credit monitoring services

ComplianceHHS notified

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing