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Nippon Steel Corporation Ransomware Attack

nipponsteel.comRansomed

metaencryptorGroup

JapanCountry

Sep 15, 2026Discovered

Overview

View group profile

Domain

nipponsteel.com

Industry

Manufacturing

Country

Japan

Discovered

24 days ago

Attack date

Sep 15, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

metaencryptor

Total victims

First seen

Oct 2025

Last seen

Sep 2026

Group status

active

Sophistication

Impact score

Threat level

2.8/10

Aggressiveness5/10

Lethality0/10

Criticality3.3/10

Status breakdown

Claimed

this victim

100.0%28

Targeted sectors

Energy & Utilities Government & Defense Healthcare Manufacturing Other Professional Services Technology Transportation

Victim's position within group

Industry

Manufacturing

Known target sector

Country

Japan

Frequently targeted country

Other victims

View all (28)

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Group activity

Monthly attacks · metaencryptor

total · avg 7/mo