Japan ICT Telecom User Associatione-learning

2LowPossibleAnnounced

An attack on IDC Frontier disrupted notification emails for an e-learning course. Lessons were unaffected. Whether applicant names and emails leaked is under review.

This incident was imported from a dataset that compiles public announcements, and we are still checking it against the sources. Counts and causes will be updated after the check. Sources are in Japanese.

Cause
Via a vendor or service
Sector
Education & research
Operational impact
Some services stopped

Data involved

DataStatusCountGroupEvidence
NamePossible leakNot disclosed—Source(opens in a new tab)
Email addressPossible leakNot disclosed—Source(opens in a new tab)

Counts are the figures the organization announced. Because the same person may be counted more than once, we do not add the rows together.

What users should do

  • Watch for emails and texts pretending to be the company

General steps based on the type of data involved. Check the organization’s notice or help line to see whether you are affected.

Sources

  1. eラーニングサービスへの不正アクセスについてwww.jtua.or.jp · Published 2026-10-09(opens in a new tab)