Wakayama Prefecture 21 Prefectural SchoolsRaiden School

1MinorPossibleAnnounced

After unauthorized access at Arcadia, data of about 16,000 contact-email registrants at 21 schools may have leaked: names, emails, school and grade.

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
None

Data involved

DataStatusCountGroupEvidence
NamePossible leakabout 16,000 people—Source(opens in a new tab)
Email addressPossible leakabout 16,000 people—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. わかやま県政ニュース(10月15日の当該報道資料へのリンク一覧)wave.pref.wakayama.lg.jp · Published 2026-10-15(opens in a new tab)
  2. 県立学校の連絡メールに係る個人情報漏えいの可能性(公式個別資料)wave.pref.wakayama.lg.jp · Published 2026-10-15(opens in a new tab)