Metsa Group and its listed subsidiary Metsa Board on Tuesday released preliminary results due to suspected hacking, but gave no further comments about the breach or actions taken.
The NBI said it was investigating the case as a serious computer break-in.Metsa Group had sales of around 4.7 billion euros ($5.6 billion) in 2016. (Reporting by Tuomas Forsell, editing by Jussi Rosendahl)