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Breach occurred 2025-10-30Verifiedupenn.edu
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.
Data exposed
Frequently asked questions
The University of Pennsylvania data breach occurred on October 30, 2025. It was added to Have I Been Pwned's breach catalog on February 16, 2026.
623,750 accounts were affected by the University of Pennsylvania data breach, according to Have I Been Pwned's records.
The University of Pennsylvania breach exposed the following data types: Charitable donations, Dates of birth, Email addresses, Genders, Income levels, Job titles, Names, Physical addresses, Religions, Salutations, Spouses names.
Yes. Have I Been Pwned has verified the University of Pennsylvania breach, meaning there's confirmed evidence the exposed data is genuine and tied to real accounts.
Use KazaSec's free Email Breach Checker (/tools/breach-check) to check whether a specific email address has surfaced in the University of Pennsylvania breach, or any other known breach — the tool never stores what you search.
Our free Email Breach Checker tells you whether a specific email address has surfaced in this breach — or any other known breach — without ever storing what you search.
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