Confirmed breach

Dartmouth College data breach

USUnited States · NH

Dartmouth College (NH, United States) notified the Oregon Department of Justice, the Texas Attorney General, the California Attorney General and the Washington Attorney General of a data breach on 24 November 2025. It told the states about 98,990 Oregon residents; the total can be higher. Exposed: Social Security numbers, Financial account and card details and Names. The breach began on 9 August 2025, 107 days before it was reported.

Status: Confirmed breach
People affected: 98,990 Oregon residents (one state’s count; the total can be higher)
Reported: 24 November 2025
Across the state notices: at least 102,442 people (Oregon, Texas and Washington: each state counts only its own residents)
Breach began: 9 August 2025
Time to tell: 107 days (the median in California’s notices over the last year: 154 days)

What was exposed

Social Security numbers
Financial account and card details
Names

Sources

Official notices are read by code from the regulator’s own register. More notices to Oregon, Texas, California, Washington. · Corrections and changes

If Dartmouth College had your data

Look for Dartmouth College’s own notice or letter: it should say what of yours was involved. Keep it.
Call your bank on the number printed on your card (never one from a message), check recent payments and ask for a new card.
An ID number cannot be changed, so lock it: a credit freeze or fraud alert in the US, a credit warning (kreditadvarsel) on borger.dk in Denmark, Cifas protective registration in the UK.
Expect scams that use your details: calls, texts or emails pretending to be Dartmouth College, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

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From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.