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Listed on a ransomware leak site

Nippon Steel Corporation

nipponsteel.com

Nippon Steel Corporation was listed on the MetaEncryptor and BianLian leak site on Feb 13, 2025. Brandefense has recorded 2 separate claims against it. Information as of Oct 19, 2026.

Country: JapanIndustry: Manufacturing, Mining
Updated continuously · figures as of Oct 19, 2026
Claimed by
MetaEncryptor, BianLian
First listed
Feb 13, 2025
Claims recorded
2

2 Leak-Site Claims.

MetaEncryptorConfirmed claim
Posted on the leak site
Sep 15, 2026
Collected by Brandefense
Sep 15, 2026
Data claimed
109 GB
Leak-site post text, written by the group
Nippon Steel Corporation is Japan’s largest steelmaker and one of the world’s leading steel producers. Headquartered in Tokyo, the company manufactures and supplies advanced steel products for the automotive, construction, energy, infrastructure, and industrial sectors. Nippon Steel operates globally through a large network of subsidiaries and production facilities, with annual revenue of approximately $67 billion and more than 138,000 employees.
BianLianConfirmed claim
Posted on the leak site
Feb 13, 2025
Collected by Brandefense
Jul 11, 2025
Data claimed
Not stated
Leak-site post text, written by the group
nippon steel, usa division.

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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.