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JAENES
BLeak confirmedOctober 6, 2026 announced

霧島市（子ども医療資格者証）Data breach / unauthorized access incident

笹尾 祐太朗の写真Reviewed by Yutaro SasaoWritten by Leak Watch editorial team published ・ updated
Occurred on
Unconfirmed
Announced on
October 6, 2026
Severity
BIncidents centered on names and contact details.
Scale
Unknown
Main impact
Due to misdelivery of qualification certificates, students' names, addresses, and dates of birth and guardians' names and addresses were exposed; after contacting the recipient who had opened them, they were retrieved the same day.
Information involved
Home addressFull nameDate of birth
Cause / key point
Insufficient delivery-address verification by the post office and misidentification of a similar address.
Industry
Government & municipal
Listing / capital
Government / public body
Sources
Last updated
October 20, 2026
Home addressFull nameDate of birthHow severity is assessed →

Is this incident worth paying attention to?

Written & reviewed

笹尾 祐太朗の写真

Reviewed byYutaro SasaoFounder & CEO, MediaLeap Inc.

CEO of MediaLeap Inc. Working on both sides of web advertising and web media since 2013; founded the company in May 2025.

Review scope: cross-checking against primary sources (official and government announcements), verifying claims stay within the facts, and checking source attribution。Last reviewed:

Written by:Leak Watch editorial team (AI-assisted drafts verified against sources by the editorial team) · Reviewer profile · Request a correction

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Attack method classification: Under investigation / not stated(Cause not disclosed)

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