leakhigh10/22/2026
Yonsei University data breach affects over 10,000 people
Yonsei University
More than 10,000 students, alumni, and other university community members had personal information exposed through unauthorized access to the Yonsei Portal Service. The university blocked the access route and requested a law-enforcement investigation.
The exposed information included student identification numbers, mobile phone numbers, email addresses, and certain system-management data. Yonsei University confirmed the breach in a notice issued on October 22, 2026. The incident involved unauthorized external access to the institution's online portal. The university said it had contained the access route and initiated an investigation.
Tags
#data breach#university#education#personal information
Source
View Original ReportLast updated: October 23, 2026