SVT can reveal that one of the companies affected is the state-owned Rymdbolaget - which handles very sensitive satellite data.
Fouad Youcefi takes you through how the hacker attack went in the player.
The reporter explains: This is how the hacker attack went
2020-12-20T21:53:46.760Z
Through a secret back door, the hackers have gained access to information and email systems at a dozen Swedish companies. They built the back door by successfully planting a malicious code in updating a program called "Orion".
Source: svt