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Listed on a ransomware leak site

First Brothers Co., Ltd

firstbrothers.com

First Brothers Co., Ltd was listed on the Qilin leak site on Oct 17, 2026. Information as of Oct 19, 2026.

Country: JapanIndustry: Education and Research
Updated continuously · figures as of Oct 19, 2026
Claimed by
Qilin
First listed
Oct 17, 2026
Claims recorded
1

Leak-Site Claim.

QilinConfirmed claim
Posted on the leak site
Oct 17, 2026
Collected by Brandefense
Oct 17, 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.