Harvard University

Disclosed Nov 3, 2026851,000 affectedUnverified

Harvard University data breach exposed info of 851,000 accounts

Hackers who breached Harvard University's Alumni Affairs and Development systems in November 2025 stole data linked to more than 850,000 unique email addresses, according to breach notification service Have I Been Pwned. [...]

What is known

People affected	851,000 (as reported in the press)
Disclosed	Nov 3, 2026
Attack	Hacking
Data exposed	Not stated
Sector	Education · US
Status	Unverified: not yet confirmed by an official notice, a filing or the organization

Sources

Newsbleepingcomputer.com

Harvard University data breach exposed info of 851,000 accounts

Notices filed

pressNov 3

Security newsCount not stated

Other breaches at Harvard University

Harvard alumni and donor data stolen in Oracle EBS and phishing attacksHacking exposed names, emails, phone numbers, addresses, financial details, dates of birth, education records and employment records.Hacking851K accountsEducationUSOct 13, 2025

History of this record

Added2026-11-04

First recordedby dailySource

First seen 2026-11-04 (Security news). Record counts are as reported. Not legal advice.

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