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SigmaControl B.V. Ransomware Attack

sigmacontrol.euRansomed

thegentlemenGroup

NetherlandsCountry

Jun 15, 2026Discovered

Overview

View group profile

Domain

sigmacontrol.eu

Industry

Technology

Country

Netherlands

Discovered

2 months ago

Attack date

Jun 15, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

thegentlemen

Total victims

479

First seen

Sep 2025

Last seen

Aug 2026

Group status

active

Sophistication

Impact score

Threat level

4.1/10

Aggressiveness10/10

Lethality0/10

Criticality1.8/10

Status breakdown

Data Leaked0.6%3

Negotiating0.2%1

Claimed

this victim

99.2%475

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

Netherlands

Frequently targeted country

Other victims

View all (479)

Same group · thegentlemen

Group activity

Monthly attacks · thegentlemen

479

total · avg 39.9/mo