Ransomware Intelligence

kisnet.co.jp

Ransomware victim

brain cipherGroup

JapanCountry

Jan 22, 2026Discovered

Overview

View group profile

Industry

Technology

Country

Japan

Discovered

5 months ago

Confidence

70%

Severity

Medium

Status

Unknown

Threat group

Total victims

28

First seen

Jul 2025

Last seen

Jun 2026

Group status

active

Sophistication

0

Impact score

70

Threat level

4.5/10

Aggressiveness6/10

Lethality2.3/10

Criticality5.3/10

Status breakdown

Data Leaked46.4%13

Claimed42.9%12

Targeted sectors

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

Victim's position within group

Industry

Technology

Known target sector

Country

Japan

Frequently targeted country

Other victims

Same group · brain cipher

Group activity

Monthly attacks · brain cipher

28

total · avg 2.8/mo