According to Security NEXT, a municipal junior high school teacher in Kariya City lost a personal USB flash drive at a commercial facility while returning home on October 4, 2024 [1]. The drive contained grade processing data and report card comments for 753 individuals, and had neither been approved or registered for use in accordance with regulations nor encrypted [1]. The school apologized to students and parents and held a parent briefing, and the report did not confirm any unauthorized access to the data by third parties [1].
This event has not been officially confirmed. Content is based on media or third-party reports.
Backfill: this event became public on Dec 26, 2024 and we added it on Nov 10, 2026. It is not a new event.
HighMonitoringBackfillMedia reported
Kariya City Junior High School Teacher Loses Unencrypted Personal USB Drive Containing Data of 753 Individuals
1 min read
- Disclosed
- Dec 26, 2024
- Published
- Nov 10, 2026
- Last updated
- Nov 7, 2026
- CVSS basis
- Our assessment
- Attack vector
- Actor type
- Motivation
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Education
What to do nowOur advice
The school apologized to students and parents and held a parent briefing, and the report did not confirm any unauthorized access to the data by third parties [1].
Timeline
- Security NEXT publishes report (date only; timestamp is a placeholder)[1]
Technical details
Verified Source Summary
A municipal junior high school teacher in Kariya City lost a personal USB flash drive at a commercial facility while returning home on October 4, 2024 [1].
The drive contained grade processing data and report card comments for 753 individuals, and had neither been approved or registered for use in accordance with regulations nor encrypted [1].
The school apologized to students and parents and held a parent briefing, and the report did not confirm any unauthorized access to the data by third parties [1].
References
Media1
- [1]
“刈谷市の市立中学校教諭が、個人情報が保存された私物のUSBメモリを持ち出し、紛失したことがわかった。”
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