Directive (EU) 2022/2555
NIS2
Essential and important entities in 18 sectors — including energy, transport, banking, health, water, digital infrastructure, public administration, manufacturing, food, postal and digital services. In Poland, the amended National Cybersecurity System Act (KSC) entered into force on 3 April 2026; obligations have separate deadlines: registration by 3 October 2026, implementing measures by 3 April 2027, first audit of essential entities by 3 April 2028.