Ransomware Intelligence

Cytek Biosciences Ransomware Attack

cytekbio.com

United StatesCountry

Jan 25, 2026Discovered

Overview

View group profile

Domain

cytekbio.com

Industry

Healthcare

Country

United States

Discovered

5 months ago

Attack date

Jan 25, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

Total victims

65

First seen

Jul 2025

Last seen

Jun 2026

Group status

active

Sophistication

0

Impact score

113

Threat level

3.3/10

Aggressiveness5/10

Lethality0/10

Criticality5/10

Status breakdown

Claimed

this victim

24.6%16

Targeted sectors

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

Victim's position within group

Industry

Healthcare

Known target sector

Country

United States

Frequently targeted country

Other victims

Same group · rhysida

Group activity