Ransomware Intelligence

CERUMO Co., Ltd

Ransomware victim

nightspireGroup

JapanCountry

Mar 31, 2026Discovered

Overview

View group profile

Industry

Manufacturing

Country

Japan

Discovered

2 months ago

Attack date

Mar 31, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

Total victims

245

First seen

Jun 2025

Last seen

May 2026

Group status

active

Sophistication

0

Impact score

77

Threat level

2.4/10

Aggressiveness5/10

Lethality0/10

Criticality2.1/10

Status breakdown

Claimed

this victim

17.1%42

Targeted sectors

Education Energy & Utilities Financial Services Government & Defense Healthcare Hospitality Manufacturing Other Professional Services Retail & E-Commerce Technology Transportation

Victim's position within group

Industry

Manufacturing

Known target sector

Country

Japan

Frequently targeted country

Other victims

Same group · nightspire

Group activity

Monthly attacks · nightspire

245

total · avg 22.3/mo