MisuseHealthcareHealthcarePrivilege AbuseEmployee Data InvolvedCustomer Data InvolvedPIIIdentity (basic)PHIHealth (basic)LowContained

MASS GENERAL BRIGHAM INCORPORATED

bd_90b5d0e711302d9d · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 4, 2024

Filed

Jun 28, 2024

To disclose

12 weeks

Affected

46state residents only

Linked

3 filings

Confidence

66%

Full breach record for MASS GENERAL BRIGHAM INCORPORATED →13 incidents on file

Mass General Brigham Incorporated notified the NH AG of a data security incident discovered on April 4, 2024. Two employees allowed an unauthorized person to perform job duties and view patient information between Feb 26 and April 4, 2024. Affected data included PII and PHI. 46 NH residents were notified. Employees were terminated, and credit monitoring was offered.

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Incident timeline

undetected · 38 days

discovery → filing · 12 weeks / 85 days

Feb 26, 2024

Begins

Apr 4, 2024

Discovered

Jun 28, 2024

Filed

vs. sector median

on median

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

HHS OCRbd_798f982e3aa2f2642024-06-28Verified
Massachusetts State AGbd_c5daf72cf2ffa3022024-06-28Verified

Name: Alston & Bird LLP
norm: alston bird

Name: MASS GENERAL BRIGHAM INCORPORATED
norm: mass general brigham
Domain: massgeneralbrigham.org
Industry: Healthcarellm

Discovered: Apr 4, 2024
Breach occurred: Feb 26, 2024 – Apr 4, 2024
Undetected for: 38 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 28, 2024
Affected individuals: 46state-resident count only
Data types: PIIIdentity (basic)PHIHealth (basic)
Attack vector: Insider
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: Internal
Initial access: insider_action

During the incident: Terminated the employees involved in the incident
Immediately conducted an investigation
Improving the safeguards it has in place to protect its patients' information
Enhancing its employee training and processes for its security alert system
Offering free credit monitoring and other services through IDX
Changes made: Improving the safeguards it has in place to protect its patients' information
Enhancing its employee training and processes for its security alert system
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(85 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 2 states

View merged incident ↗

HHS OCRJun 28 · first

Massachusetts State AGJun 28 · first

New Hampshire State AGJun 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://mm.nh.gov/files/uploads/doj/remote-docs/mass-general-brigham-incorporated-20240628.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 28, 2024
Raw hash: 279a746c98d0c20111748ba5177d6a9dd4345aa08a42161ce58d550c3f7da00e

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityAlston & Bird LLP

Victim entityMASS GENERAL BRIGHAM INCORPORATED

Incidentdiscovered Apr 4, 2024

Stated responseTerminated the employees involved in the incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov