UnknownEducationEducationGovernment IDFinancial accountHigh

The Trustees of the University of Pennsylvania

bd_8ad1850d7141bc9a · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Dec 2, 2025

To disclose

—

Affected

16,963state residents only

Linked

17 filings

Confidence

95%

Full breach record for The Trustees of the University of Pennsylvania →3 incidents on file

The University of Pennsylvania reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-12-02. 16,963 Massachusetts residents were affected.

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Massachusetts clock✓ MA credit monitoring due

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

Incident timeline — partial

? — ?

Breach window unknown

Dec 2, 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 17 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteshinyhuntersbd_20d98f86cadb16022026-02-04 · +64dVerified by operator

Regulatory filings (9) · sorted by filing gap

Texas State AGbd_e679c6a24510eaf92025-12-03 · +1dVerified by operator
California State AGbd_194bd163b527a3352025-12-01 · +1dVerified by operator
Montana State AGbd_1fae715254418c002025-12-01 · +1dVerified by operator
Iowa State AGbd_3340eceed80aa4a62025-12-01 · +1dVerified by operator

Show 5 more filings ↓up to 134d gap

South Carolina State AGbd_36bdda19f39a3c942025-12-01 · +1dVerified
Delaware State AGbd_5e138ad76c39ef7a2025-12-01 · +1dVerified by operator
New Hampshire State AGbd_04392877ff003a222025-12-04 · +2dVerified
Oregon State AGbd_52860701b7a833ff2025-12-22 · +20dVerified by operator
Washington State AGbd_5fa5e741d0d862242026-04-15 · +134dVerified by operator

Showing first 10 of 16 linked disclosures.

Name: The Trustees of the University of Pennsylvania
norm: the trustees of the university of pennsylvania

Name: The Trustees of the University of Pennsylvania
norm: the trustees of the university of pennsylvania
Industry: Educationregulator portal

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 16,963state-resident count only
Data types: Government IDFinancial account
Data elements: Social Security numberFinancial account number
Stated not affected: Medical informationDriver's licence numberPayment card number
The filing states these were not involved. Categories absent from both lists were not addressed either way.
Attack vector: Unknown
Threat actor: External

Compliance flags: MA 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 · 10 filings · 10 states

View merged incident ↗

California State AGDec 1 · first

Montana State AGDec 1 · first

Iowa State AGDec 1 · first

South Carolina State AGDec 1 · first

Delaware State AGDec 1 · first

Massachusetts State AG+1d · this page

Texas State AG+2d

New Hampshire State AG+3d

Oregon State AG+21d

Washington State AG+135d

Pattern: first filing Dec 1 (CA), last Apr 15 (WA) — a 135-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 16 — the full spread may be wider.

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: Dec 2, 2025
Raw hash: e3e2f4164f02b3146372551c1b3934363fbe2ef99be8c813511efaaa139b7ec2

Linked disclosures

Ransomware claims (1)

Regulatory filings (9) · sorted by filing gap

Reporting entityThe Trustees of the University of Pennsylvania

Victim entityThe Trustees of the University of Pennsylvania

IncidentUnknown

ComplianceMA credit monitoring due

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov