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JAENES
BPossible leakMay 11, 2026 announced

ホクヨー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
March 26, 2026
Announced on
May 11, 2026
Severity
BIncidents centered on names and contact details.
Scale
Unknown
Main impact
A ransomware-related system outage occurred on March 26, but as of May 11 systems have been restored and operations are unaffected. Investigation is ongoing regarding any personal data leakage.
Information involved
Not specified in the disclosure
Cause / key point
The cause is under investigation.About Ransomware
Industry
Manufacturing
Listing / capital
Unlisted
Sources
Last updated
October 20, 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: Ransomware(Encrypting data and demanding a ransom)

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