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Listed on a ransomware leak site

kisnet.co.jp

kisnet.co.jp

kisnet.co.jp was listed on the Brain Cipher leak site on May 1, 2026. Information as of Oct 19, 2026.

Country: JapanIndustry: Telecommunications
Updated continuously · figures as of Oct 19, 2026
Claimed by
Brain Cipher
First listed
May 1, 2026
Claims recorded
1

Leak-Site Claim.

Brain CipherConfirmed claim
Posted on the leak site
May 1, 2026
Collected by Brandefense
May 1, 2026
Data claimed
Not stated
Leak-site post text, written by the group
Kisnet Co., Ltd. is a Japanese internet service provider based in Japan. The company offers broadband and network connectivity services primarily to residential and business customers. Operating within the telecommunications and ISP industry, Kisnet provides internet access solutions in the Japanese market. The company is part of Japan's regional ISP sector, delivering reliable network infrastructure and related services to its subscriber base.

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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.