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According to The Record, the Danish government said on October 5 that someone exploited an unnamed Danish company's legitimate access to the Central Person Register (CPR) to obtain the names, addresses and CPR numbers of about 8.
Novo Nordisk said it identified unauthorized access to a limited number of internal IT systems and found certain non-public data, including personal data, was copied externally; some systems were taken offline while core operations continued .
In an assessment published on December 18, 2025, the Danish Defence Intelligence Service (DDIS / FE) stated that Russia was responsible for a destructive cyberattack against a Danish water utility in 2024 .
The Danish Defence Intelligence Service (DDIS) assessed that Danish websites were targeted by a series of denial-of-service attacks in the run-up to the 2025 municipal and regional council elections .