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TechRadar
TechRadar
Sead Fadilpašić

Massive Columbia University data breach affects nearly 900,000 past and present students - here's what was leaked, and how to stay safe

Representational image depecting cybersecurity protection.
  • Columbia University files form with the Maine Attorney General's Office
  • It confirmed the number of victims, and the type of data stolen
  • Victims are being offered free credit and identity theft monitoring services

A massive cyberincident affecting almost 870,000 Columbia University students, employees, and other individuals occured in May 2025, the university has confirmed.

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