Toyo University security incident history
Hacking, data breaches and other security incidents involving Toyo University, with related coverage.
Incidents: 1 · Most recent
Toyo University confirms alumni and parents’ email addresses leaked in external email service breach
↳ Knock-on damage from another organization’s incident · View original incidentToyo University announced on November 11, 2026, that email addresses belonging to alumni, guardians of current students and others had been leaked following a breach of the external email delivery service Arara Message. The leak resulted from unauthorized access to the service between October 28 and 31 and affected email addresses receiving the August newsletter for guardians and the October newsletter for alumni. Only email addresses were registered with the service, and the number leaked was not disclosed.
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