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Seznam Ransomware Attack

seznam.czRansomed

medusalockerGroup

Czech RepublicCountry

Sep 23, 2026Discovered

Overview

View group profile

Domain

seznam.cz

Industry

Technology

Country

Czech Republic

Discovered

23 days ago

Attack date

Sep 23, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

medusalocker

Total victims

First seen

Nov 2025

Last seen

Oct 2026

Threat level

2.2/10

Aggressiveness5/10

Lethality0/10

Criticality1.5/10

Status breakdown

Claimed

this victim

100.0%84

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

Czech Republic

Not a listed target country

Other victims

View all (84)

Same group · medusalocker

Millensys
Brazil
Claimed
Rüegsegger AG
Switzerland
Claimed
PKSF — Palli Karma-Sahayak Foundation
Bangladesh
Claimed
Junta de Andalucía
Spain
Claimed
Premiumfruits
Spain
Claimed
ATCO Ltd
Canada
Claimed

Group activity

Monthly attacks · medusalocker

total · avg 12/mo