For those not getting the scope of this. The following has been compromised for all living danish citizens and foreign nationals which have had recidence. And quite a few dead ones as well.
- Social security number
- Age
- Sex
- Family relations
- Physical address
- Protected addresses
- Sex change
This is a country with quite good health records. Unfortunately also previous problems with proper non-reversible anonymisation of said data when used for research.
This is were security meets the real world. The number is not secret but people have been taught to keep it confidential. And when you know the last 4 digits social engineering har become a lot easier.
For those not getting the scope of this. The following has been compromised for all living danish citizens and foreign nationals which have had recidence. And quite a few dead ones as well.
- Social security number
- Age
- Sex
- Family relations
- Physical address
- Protected addresses
- Sex change
This is a country with quite good health records. Unfortunately also previous problems with proper non-reversible anonymisation of said data when used for research.
CPR is the national register of all people (Central Person Register).
CPR is the administrator. There is more information in the linked press release from the ministry:
https://ufm.dk/aktuelt/pressemeddelelser/2026/oktober/omfatt...
This is a huge headline story in Denmark today and I choose to link danish content as they are the primary source.
The only current english language sources are paywalled:
https://www.thelocal.dk/20261005/hackers-get-personal-info-o...
https://www.bloomberg.com/news/articles/2026-10-05/denmark-d...
Non-paywalled but major danish news outlet (National Brodcaster):
https://www.dr.dk/nyheder/indland/live-uvedkommende-har-haft...
I am so done, my cpr is leaked oh no. Like I don't
This is were security meets the real world. The number is not secret but people have been taught to keep it confidential. And when you know the last 4 digits social engineering har become a lot easier.
On positive side maybe now there is no reason to use it for authentication anymore. When it was always unsuitable for that reason.