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JAENES
BPossible leakOctober 18, 2026 announced

株式会社ビジネステック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
October 15, 2026
Announced on
October 18, 2026
Severity
BIncidents centered on names and contact details.
Scale
8,800 people
Main impact
Unauthorized access to the funeral reservation system for 足利市 was announced to have possibly exposed personal data of about 8,800 people; the system has been suspended and an investigation is underway.
Information involved
Not specified in the disclosure
Cause / key point
Due to unauthorized external access, illicit queries were made to the database and unauthorized data was added to the system's notices section.
Industry
IT & telecom
Sources
Last updated
October 25, 2026

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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: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)

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