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Listed on a ransomware leak site

Nishiyama Seisakusho

nishiyama-ss.co.jp

Nishiyama Seisakusho was listed on the The Gentlemen leak site on Feb 6, 2026. Information as of Oct 19, 2026.

Country: JapanIndustry: Unknown
Updated continuously · figures as of Oct 19, 2026
Claimed by
The Gentlemen
First listed
Feb 6, 2026
Claims recorded
1

Leak-Site Claim.

The GentlemenConfirmed claim
Posted on the leak site
Feb 6, 2026
Collected by Brandefense
Apr 3, 2026
Data claimed
Not stated
Leak-site post text, written by the group
nishiyama-ss.co.jp zoominfo.com/c/nishiyama-seisakusho-co-ltd/[removed] Nishiyama Seisakusho Co., Ltd. specializes in the production of precision machinery and components, particularly focusing on high-quality manufacturing since its establishment in 1949. The company offers a range of products including precision gears and mechanical parts, catering to various industries. Their intended clients include businesses in need of reliable and precise mechanical solutions. With a commitment to quality

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.