HackingEducationEducationVulnerability ExploitCapture Stored DataZero-DayData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHighContained

TRUSTEES OF DARTMOUTH COLLEGE

bd_439dac3a0f840f59 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 12, 2025

Filed

Nov 24, 2025

To disclose

15 weeks

Affected

1,496state residents only

Linked

13 filings

Confidence

70%

Full breach record for TRUSTEES OF DARTMOUTH COLLEGE →3 incidents on file

Dartmouth College reported a cyberattack involving its Oracle eBusiness Suite software. An unauthorized actor exploited a zero-day vulnerability to access files between August 9 and August 12, 2025. The incident affected 1,496 Washington residents, exposing names, dates of birth, Social Security numbers, and financial account information. Dartmouth notified law enforcement, secured the environment, and began mailing notifications on November 24, 2025, offering one year of credit monitoring.

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Washington clock✗ WA AG >90d15 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 · 3 days

discovery → filing · 15 weeks / 104 days

Aug 9, 2025

Begins

Aug 12, 2025

Discovered

Nov 24, 2025

Filed

vs. sector median

+8 wks slower

This filing is one of 13 about the same incident.View merged incident

Part of ORACLE CORPORATION supply-chain incident (2025) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Maine State AGbd_07b22465c236a6f22025-11-24Verified
Oregon State AGbd_2dead266e42de1ff2025-11-24Verified by operator
Indiana State AGbd_38e52b6e38cc0ee42025-11-24Verified by operator
Montana State AGbd_3b0210c2acc1ce1b2025-11-24Verified by operator

Show 6 more filings ↓up to 1d gap

Massachusetts State AGbd_6854077ce0b881d22025-11-24Verified
Nebraska State AGbd_6dfe95e3e2536ab42025-11-24Verified
California State AGbd_d741e94ef055d19f2025-11-24Verified by operator
New Hampshire State AGbd_e56966dbdaa7a6aa2025-11-24Verified by operator
Vermont State AGbd_f2c4dd09e711cb7c2025-11-24Verified by operator
Texas State AGbd_d680ed0b5138075b2025-11-25 · +1dVerified

Showing first 10 of 12 linked disclosures.

Name: TRUSTEES OF DARTMOUTH COLLEGE
norm: trustees of dartmouth college
Domain: dartmouth.edu
Industry: Education

Name: TRUSTEES OF DARTMOUTH COLLEGE
norm: trustees of dartmouth college
Domain: dartmouth.edu
Industry: Education
Industry: Educationllm

Discovered: Aug 12, 2025
Breach occurred: Aug 9, 2025 – Aug 12, 2025
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 24, 2025
Affected individuals: 1,496state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: NameSocial Security numberFinancial account numberDate of birth
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement
Initial access: exploit_public_facing

During the incident: Took measures to secure the environment
Notified law enforcement
Launched an investigation
Began mailing notification letters via U.S. First-Class mail
Offering one-year of complimentary credit monitoring and identity theft protection services
Established a toll-free call center
Changes made: Implemented all publicly available patches provided following the incident for the Oracle EBS software
Will continue to vet its vendors’ data security practices
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(104 days from discovery to filing)
Compliance flags: WA AG >90d
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 · 11 filings · 11 states

View merged incident ↗

Maine State AGNov 24 · first

Oregon State AGNov 24 · first

Indiana State AGNov 24 · first

Montana State AGNov 24 · first

Massachusetts State AGNov 24 · first

Nebraska State AGNov 24 · first

California State AGNov 24 · first

New Hampshire State AGNov 24 · first

Vermont State AGNov 24 · first

Washington State AGNov 24 · first · this page

Texas State AG+1d

Cascade drawn from the first 10 linked disclosures of 12 — 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/BreachA35643.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 24, 2025
Raw hash: 8404d8fecb5021bd4857f6f2ce35cb444c14cea725001f217d8a8e2526195410

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityTRUSTEES OF DARTMOUTH COLLEGE

Victim entityTRUSTEES OF DARTMOUTH COLLEGE

Incidentdiscovered Aug 12, 2025

Stated responseTook measures to secure the environment

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com