What was exposed, when it happened, and which databases confirm it.
- accounts
- 623,750
- Breached
- October 30, 2025
- Last Update
- February 16, 2026
Were you caught in this breach?
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What happened
In October 2025, the University of Pennsylvania was the victim of a data breach followed by a ransom demand, largely affecting its donor database. After the incident, the attackers sent inflammatory emails to some victims. The data was later published online in February 2026 and included 624k unique email addresses alongside names and physical addresses. For some donor records, additional personal information was exposed, including gender and date of birth. A small subset of records also contained religion, spouse name, estimated income and donation history.
Compromised Info
- Charitable donations
- Dates of birth
- Email addresses
- Genders
- Income levels
- Job titles
- Names
- Physical addresses
- Religions
- Salutations
- Spouses names
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- HIBP
FAQ
What was leaked in the UniversityOfPennsylvania breach?
The UniversityOfPennsylvania breach exposed: Charitable donations, Dates of birth, Email addresses, Genders, Income levels, Job titles, Names, Physical addresses, Religions, Salutations, and Spouses names.
When did the UniversityOfPennsylvania breach happen?
The UniversityOfPennsylvania breach was disclosed on October 30, 2025 and affected 623,750 records.
Am I affected by the UniversityOfPennsylvania breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the UniversityOfPennsylvania leak.