Ransomware Intelligence

Graymatter Ransomware Attack

graymatter.com

United KingdomCountry

Feb 20, 2026Discovered

Overview

View group profile

Domain

graymatter.com

Industry

Technology

Country

United Kingdom

Discovered

5 months ago

Attack date

Feb 19, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

Total victims

263

First seen

Jul 2025

Last seen

May 2026

Group status

active

Sophistication

0

Impact score

70

Threat level

2.6/10

Aggressiveness5/10

Lethality0/10

Criticality2.7/10

Status breakdown

Claimed

this victim

100.0%263

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

Technology

Known target sector

Country

United Kingdom

Frequently targeted country

Other victims

Same group · sinobi

Group activity

Monthly attacks · sinobi

263

total · avg 26.3/mo