Harvard University reveals data breach exposed 851,000 accounts
- Harvard breach data affecting 850,500 people has now surfaced in breach-tracking databases and dark web archives
- Exposed information includes emails, contact details, demographics, and extensive alumni and donor profile data
- Attack highlights ongoing risks from social-engineering attacks against universities and fundraising systems
Hundreds of thousands of email addresses have been leaked to the dark web after the November 2025 ShinyHunters breach at Harvard University.
The same breach also exposed “extensive profile information” about certain people, as well, according to Have I Been Pwned? (HIBP), a website that aggregates stolen passwords and helps users learn which services exposed their private information.
Harvard gets hit
In late November 2025, the prestigious Ivy League University confirmed its Alumni Affairs and Development systems had been compromised after a successful voice phishing (vishing) attack.
These systems contained information about alumni, donors, some faculty and staff, and some current students, as well as data on...
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