National Museum of Denmark

National Museum of Denmark

Data Breach on June 16, 2026
Data Breach Report
Victimnatmus.dk
Claimed ByTheGentlemen
Date DiscoveredJun 16, 2026
DescriptionThe National Museum of Denmark is a cultural institution based in Denmark that preserves, researches, and exhibits national historical and archaeological collections.
Leak SizeUnknown

Credential Exposure for natmus.dk

We've indexed 227 @natmus.dk accounts from external breaches, plus 1 credentials for natmus.dk itself.

Last checked Sep 13, 2026

@natmus.dk addresses from external breaches
Third-party breaches220 accounts · across 53 breaches · 164 with a plaintext password · most recent Feb 26, 2026
Combo lists66 accounts · most recent Sep 10, 2026
Passwords for natmus.dk accounts
Combo lists1 logins · most recent Jun 22, 2026

Logins may belong to customers or to staff, and the data doesn't say which. None of this is necessarily connected to the ransomware attack above.

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