Harvard Flunks Cybersecurity As Massive Breach Exposes 851,000 Users
New information has come to light over the 2025 cybersecurity breach at Harvard University whereby a reported 851,000 accounts within its alumni and development systems were exposed.
The intrusion originally unfolded from a voice-phishing (vishing) attack against Harvard’s Alumni Affairs and Development (AAAD) division in November 18, 2025. Now, according to tracking from the breach notification service Have I Been Pwned, the incident exposed 850,537 unique email accounts, alongside an extensive repository of constituent profiles.
Said database served as the primary relationship-management engine for Harvard’s worldwide network, tracking engagement records, career paths, and philanthropic commitments. Consequently, the stolen files contained a wide array of sensitive information, including legal names, physical addresses, corporate affiliations, and historical donation data. Moreover, the leak affected a diverse cross-section of the university community, encompassing alumni, donors, parents, faculty members, students, and prominent public figures.
After the 2025 intrusion was contained by the university (and...
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