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JAENES
SPossible leakJuly 24, 2026 announced

大川精螺工業株式会社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
May 17, 2026
Announced on
July 24, 2026
Severity
SCompromise of deep personal data or usable credentials.
Scale
Unknown
Main impact
The company reports it was hit by a ransomware attack and some personal information it holds may have been leaked. Servers and endpoints were reinitialized and business systems restored, but some data was encrypted.
Information involved
Not specified in the disclosure
Cause / key point
Unauthorized access via intrusion through the remote-access VPN entry point, with an administrator account stolen and misused, resulting in a ransomware attack.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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