Nippon Steel Corporation

metaencryptorransomware groupnipponsteel.com

Deadline passed / release unconfirmed

Sep 15, 2026

Added Sep 15, 2026

Nippon Steel Corporation is Japan's largest steelmaker and one of the world's leading steel producers, headquartered in Tokyo. The company operates across steelmaking and steel fabrication, engineering, chemicals, and systems solutions.

Actor timeline discrepancies

Release unconfirmed Listing date inconsistent

Evidence & timeline (2)

The stated deadline was 25 Oct 2026, 18:26 UTC. On 26 Oct 2026, 18:39 UTC, the source still indicated an unpublished status.

We already observed this disclosure on 15 Sept 2026, 11:44 UTC. On 29 Sept 2026, 08:15 UTC, the actor described it as "4 days ago", which conflicts with our earlier evidence even allowing for rounded dates.

Actor-provided dates are claims. A deadline extension does not establish whether stolen data is authentic or whether payment would result in recovery.

26 Oct 2026, 18:39 UTC: Source still indicated unpublished after its deadline
29 Sept 2026, 08:15 UTC: Reported listing date contradicts earlier evidence

Leak Page Screenshot

Organization Details

Organization

Nippon Steel USA

Domain

nipponsteel.com

Country

🇺🇸 US

Industry Sector

Manufacturing

nipponsteel.com

Leak Data

Data Size

109 GB

Publication Due

Oct 25, 2026

Publication Status

Release unconfirmed

Discovered

Sep 15, 2026

Data Types

None mentioned

Leak URL

https://metacrpttdfpbm4qoxzcrqqgr6e6zafpazgxm72knmujw2mwvi34rwad.onion

Site OnlineLast scanned 5m ago

Threat Group

metaencryptor

ransomware group

View full group profile →

Quick Facts

Country🇺🇸 US

SectorManufacturing

Data Size109 GB

AddedSep 15, 2026