Muzeum Valassko Ransomware Attack

muzeumvalassko.cz

deadlockGroup

Czech RepublicCountry

May 5, 2026Discovered

Overview

View group profile

Domain

muzeumvalassko.cz

Industry

Hospitality

Country

Czech Republic

Discovered

2 months ago

Attack date

May 5, 2026

Confidence

90%

Severity

Medium

Status

Claimed

Threat group

deadlock

Total victims

First seen

Jul 2026

Last seen

Jul 2026

Group status

active

Sophistication

Impact score

Threat level

2.5/10

Aggressiveness6/10

Lethality0.2/10

Criticality1.2/10

Status breakdown

Data Leaked4.5%4

Claimed

this victim

36.4%32

Targeted sectors

Government & Defense Healthcare Manufacturing Other Retail & E-Commerce Technology

Victim's position within group

Industry

Hospitality

Not a listed target sector

Country

Czech Republic

Frequently targeted country

Other victims

View all (89)

Same group · deadlock

View Online
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Claimed
Vinilon
Indonesia
Claimed
Catcorp
—
Unknown
Weinberg ''93 Építő Kft.
Hungary
Unknown
The Morton Grove Park District
United States
Unknown
Schlenker and Cantwell, P.A.
United States
Unknown

Group activity

Monthly attacks · deadlock

total · avg 1/mo