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Listed on a ransomware leak site

Mutsumi Group

mutsumi-g.co.jp

Mutsumi Group was listed on the Qilin leak site on Oct 4, 2026. Information as of Oct 19, 2026.

Country: JapanIndustry: Construction
Updated continuously · figures as of Oct 19, 2026
Claimed by
Qilin
First listed
Oct 4, 2026
Claims recorded
1

Leak-Site Claim.

QilinConfirmed claim
Posted on the leak site
Oct 4, 2026
Collected by Brandefense
Oct 4, 2026
Data claimed
Not stated

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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.