An incident that seriously degrades or interrupts a service provided by an essential or important entity, causes it financial losses or seriously harms others.
A summary of the definition in Article 2(7) of the National Cybersecurity System Act.1
Sources
- Sejm of the Republic of Poland, Act on the national cybersecurity system, consolidated text, Journal of Laws 2026, item 20, as amended (consolidated text prepared by the Chancellery of the Sejm) (in Polish)
Checked: 3 November 2026