Ransomware Intelligence

Graymatter

graymatter.com

sinobiGroup
United KingdomCountry
Feb 20, 2026Discovered

Domain

graymatter.com

Industry

Technology

Country

United Kingdom

Discovered

4 months ago

Attack date

Feb 19, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

sinobi

Total victims

272

First seen

Jun 2025

Last seen

May 2026

Group status

active

Sophistication

0

Impact score

66

Threat level

2.6/10
Aggressiveness5/10
Lethality0/10
Criticality2.7/10

Status breakdown

Claimed
this victim
100.0%272

Victim's position within group

Industry

Technology

Known target sector

Country

United Kingdom

Frequently targeted country

Group activity

Monthly attacks · sinobi

272

total · avg 24.7/mo

JunJulAugSepOctNovDecJanFebMarMay015304560