An incident whose effects exceed the state's capacity to respond, or which also significantly affects another EU member state.
A summary of the definition in Article 2 point 8 of the Polish Act on the National Cybersecurity System.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