Harvard University data breach exposed data of about 851,000 accounts

Summary

Hackers breached Harvard University's Alumni Affairs and Development systems in November 2025 and stole data linked to more than 850,000 unique email addresses, according to the breach notification service Have I Been Pwned, as reported by BleepingComputer. The Register reports that the ShinyHunters group hit roughly 850,000 alumni, donors, students and family members in the raid, which a data-sifting breach site claims leaked personal and donation data about a year after the attack.

Timeline

1. BleepingComputer

   3 Nov 2026, 10:53 UTCSource ↗

   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 Have I Been Pwned.

2. The Register

   3 Nov 2026, 15:38 UTCSource ↗

   The ShinyHunters group hit about 850,000 alumni, donors, students and family members in last year's Harvard University raid, with plenty of personal and donation data leaked, according to a data-sifting breach site that claims the data a year after the attack.