Key takeaway: NIS2 applies across 18 sectors, split between Annex I and Annex II. Annex I entities are normally essential, supervised proactively, with fines up to 10 million euro or 2 percent of turnover. Annex II entities are normally important, supervised reactively, with fines up to 7 million euro or 1.4 percent. The general size threshold is 50 or more staff or more than 10 million euro annual turnover.

The NIS2 Directive applies horizontally across 18 sectors, but the way it lands inside each organization depends on the industry. A hospital, a data center, a steel plant, and a ministry all fall under the same directive, yet the practical controls, the risk picture, and the regulators differ sharply. These guides translate NIS2 into sector-specific terms so your team can move from text to action.

Burak Yazici, PECB Certified NIS2 Lead Implementer

Written by Burak Yazici

PECB Certified NIS2 Lead Implementer

Not sure which category you fall into?

Essential or important, Annex I or II, medium or large: the boundary lines are narrower than they look. A 30-minute scoping call is usually enough to settle it.