HackingEducationEducationVulnerability ExploitZero-DayData ExfiltratedTargetedFinancial accountIdentity (basic)Government IDPIIHighContained

The Trustees of the University of Pennsylvania

bd_dcf68884b841a7d5 · schema v1 · pii pii-v1

Severity

High

Discovered

Sep 29, 2025

Filed

Dec 1, 2025

To disclose

9 weeks

Affected

6,413state residents only

Linked

17 filings

Confidence

71%

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

The University of Pennsylvania disclosed a data breach involving its Oracle E-Business Suite application. Unauthorized access occurred between August 9-11, 2025, exploiting a previously unknown vulnerability. The incident affected 6,413 Washington residents, with personal information including names and government IDs accessed. Penn notified law enforcement, applied security patches, and offered 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d9 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 51 days

discovery → filing · 9 weeks / 63 days

Aug 9, 2025

Begins

Sep 29, 2025

Discovered

Dec 1, 2025

Filed

vs. sector median

+2 wks slower

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 · +65dVerified by operator

Regulatory filings (9) · sorted by filing gap

California State AGbd_194bd163b527a3352025-12-01Verified by operator
Montana State AGbd_1fae715254418c002025-12-01Verified by operator
Iowa State AGbd_3340eceed80aa4a62025-12-01Verified by operator
South Carolina State AGbd_36bdda19f39a3c942025-12-01Verified

Show 5 more filings ↓up to 135d gap

Massachusetts State AGbd_8ad1850d7141bc9a2025-12-02 · +1dVerified by operator
Texas State AGbd_e679c6a24510eaf92025-12-03 · +2dVerified by operator
New Hampshire State AGbd_04392877ff003a222025-12-04 · +3dVerified
Oregon State AGbd_52860701b7a833ff2025-12-22 · +21dVerified by operator
Washington State AGbd_5fa5e741d0d862242026-04-15 · +135dVerified 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: Educationllm

Discovered: Sep 29, 2025
Breach occurred: Aug 9, 2025 – Aug 11, 2025
Undetected for: 51 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 1, 2025
Affected individuals: 6,413state-resident count only
Data types: PIIIdentity (basic)Government ID
Data elements: NameSocial Security numberFinancial account number
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: cooperating with an ongoing federal law enforcement investigation
Initial access: exploit_public_facing

During the incident: Launched an investigation with the assistance of outside cybersecurity experts
Notified law enforcement and is cooperating with an ongoing federal law enforcement investigation
Promptly applied all security patches released by Oracle to address the vulnerability
Working with cybersecurity experts to reinforce our systems to mitigate the risk of future unauthorized access to information
Providing you with access to complimentary Experian credit monitoring and remediation services for 24 months at no charge to you
Changes made: Applied all security patches released by Oracle to address the vulnerability
Working with cybersecurity experts to reinforce our systems to mitigate the risk of future unauthorized access to information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(63 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 9 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

Washington State AGDec 1 · first · this page

Massachusetts State AG+1d

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA35728.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 1, 2025
Raw hash: efa3466bead1204d81c8fadede7ce452cda298f0a5ba78662430e743a6c2e3bc

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

Incidentdiscovered Sep 29, 2025

Stated responseLaunched an investigation with the assistance of outside cybersecurity experts

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com