---
type: "term"
title: "NIS2 (Network and Information Security Directive 2)"
description: "The EU directive establishing cybersecurity risk management and incident reporting obligations for essential and important entities."
resource: "tlctc:term:nis2-network-and-information-security-directive-2"
tags:
  - "glossary"
---
# NIS2 (Network and Information Security Directive 2)

The EU directive establishing cybersecurity risk management and incident reporting obligations for essential and important entities. In TLCTC: NIS2 is an **incident-triggered regulation** — its reporting obligations activate at E1 (Significant Incident / System Compromise) regardless of whether personal data is involved. This contrasts with GDPR, which is **data-triggered** (activates at E2 when PII is affected). NIS2 Art. 23 requires a 24-hour early warning, creating a shorter event chain length (E1→E3b = 2 events) compared to GDPR's 72-hour notification timeline (E1→E2→E3a = 3 events).

**Reference:** V1.9.1 §Cyber Threat Radars




**Related reading:** [CVE-2020-17103 — patch closed an effect, not a cluster](https://www.tlctc.net/cve-2020-17103.html), [NIS2 Directive × TLCTC — implementation guide](https://www.tlctc.net/tlctc-NIS2.html), [NIS2 — TLCTC pain points & fixes](https://www.tlctc.net/blog-NIS2-Pain-Points.html), [EU cyber regulation needs a common taxonomy](https://www.tlctc.net/blog-eu-regulation-tlctc-taxonomy.html), [EU regulation (NIS2/DORA/CRA) vs TLCTC](https://www.tlctc.net/tlctc-eu-regulation.html), [GDPR vs NIS2 — different trigger points](https://www.tlctc.net/tlctc-gdpr-nis2-triggers.html), [TLCTC vs 30+ standards & regulations](https://www.tlctc.net/tlctc-regulatorsANDstandards.html), [Logical impossibility of control-first regulation](https://www.tlctc.net/tlctc-control-first-regulation.html), [The Commit Is the CVE — silent fixes & the patch-gap collapse](https://www.tlctc.net/silent-fix-window.html), [TLCTC v2.1 monster prompt — Regulators & Standards](https://www.tlctc.net/tlctc-prompt-regulators.html)

See also: DORA, Regulatory Trigger Point, Event Chain Length, Eₙ Event Notation
