The University of Copenhagen has reported a data breach affecting approximately 525,000 individuals after hackers infiltrated a test environment. The exposed records included full names, Danish national identity numbers, work and private phone numbers, and personal email addresses. Although the intrusion involved a test environment, the information described was personal data rather than purely synthetic test records.
The distinction is significant: the affected system was separate from systems supporting daily operations, but it still contained information belonging to many people.
UNIVERSITY OF COPENHAGEN DATA BREACH EXPOSES INFORMATION FOR 525,000 PEOPLE Hackers gained unauthorized access to a university’s test environment, containing sensitive personal information such as full names, Danish national ID numbers, work and private phone numbers, and email addresses. The breach was quickly remedied by the university, which replaced affected codes and temporarily restricted access to certain critical areas.
Approximately 20,000 affected cardholders are a separate group detailed in the incident report; their count should not be included in the total of 525,000 people. Key unanswered questions include how the initial access was obtained, how long the unauthorized access lasted, and whether any information was copied or subsequently misused. Join 16,000+ SOC teams using ANY.RUN to streamline threat investigations and reduce manual effort.












