---
title: "The Overlap Between NIS2 and CER: What Critical Entities Need to Know"
description: Where NIS2 and the CER Directive overlap, how they differ and what the combination means for critical entities managing physical access.
---

[news](https://key2xs.com/news)

# [The Overlap Between NIS2 and CER: What Critical Entities Need to Know](https://key2xs.com/news/the-overlap-between-nis2-and-cer-what-critical-entities-need-to-know)

 Geschreven door [Key2XS](https://key2xs.com/news/author/key2xs-2) | Jul 7, 2025, 7:00:00 AM

**In short:** [NIS2](https://key2xs.com/nis2-directive?hsLang=nl) governs cyber resilience, CER governs entity resilience — and critical entities typically fall under both. They overlap precisely where physical access meets information systems: premises access policies, incident reporting and supply-chain control. Governed keys satisfy both at once.

 

## **The Overlap Between NIS2 and CER: What Critical Entities Need to Know**

In the evolving landscape of European cybersecurity and infrastructure protection, two major regulations stand out: the **NIS2 Directive** (Network and Information Security) and the **[CER Directive](https://key2xs.com/cer-directive?hsLang=nl)** (Critical Entities Resilience). While they originate from different policy domains — cybersecurity versus infrastructure resilience — they are **closely interlinked** in both intent and impact.

Understanding their **overlap** is essential for critical entities aiming to stay compliant, avoid duplication, and build a unified resilience strategy.

 

### **Shared Objectives**

Both **NIS2** and **CER** aim to strengthen the resilience of entities that provide **essential services** across the EU, such as:

- Energy
- Water
- Transport
- Digital infrastructure
- Health
- Public administration

Key shared goals include:

- Preventing and mitigating the impact of **disruptions**, whether digital (cyberattacks) or physical (sabotage, natural disasters),
- Promoting **risk-based approaches** to security,
- Ensuring **incident reporting and response readiness**,
- Encouraging a **coordinated European approach** to critical infrastructure protection.

Key Differences

Despite these differences, **NIS2 and CER converge** in several operational areas.

 

### **Points of Convergence**

#### **1. Risk Management and Governance**

Both directives require a structured approach to risk management:

- Under **NIS2**, this includes cybersecurity controls like access management, encryption, and patching.
- Under **CER**, entities must assess risks to **operational continuity**, including supply chain dependencies, natural hazards, and malicious attacks.

Unified approach: Organizations should adopt an **integrated risk framework** that accounts for both digital and physical threats.

 

#### **2. Incident Reporting**

Both directives enforce **mandatory incident reporting**:

- NIS2: Notify the competent authority/CSIRT within **24 hours** after a cyber incident.
- CER: Report any significant **disruption** (including physical sabotage, natural disasters, or third-party failure) as soon as possible.

Unified approach: Implement **centralized incident response procedures** and ensure legal, cybersecurity, and operations teams are aligned on what qualifies as reportable.

 

#### **3. Supply Chain Security**

Both frameworks recognize third-party risk as a key vulnerability:

- NIS2 demands measures for managing digital supply chain risk (e.g. software providers, MSPs).
- CER emphasizes supplier dependencies for physical infrastructure and operations.

Unified approach: Use **vendor risk assessments**, contracts with security clauses, and **access management systems** (such as IAM and electronic key management) to manage supplier access.

 

#### **4. Resilience Planning**

- NIS2 entities must ensure the **availability, integrity, authenticity and confidentiality** of systems.
- CER requires a formal **resilience plan** covering contingency, continuity, and recovery in case of disruptions.

Unified approach: Integrate **business continuity planning (BCP)** and **disaster recovery (DR)** into both cybersecurity and physical operations, with regular testing and audits.

 

### **Strategic Alignment Tips**

- Appoint a **single accountable function** (CISO, CRO, or Resilience Officer) to coordinate NIS2 and CER efforts.
- Centralize asset, access, and risk data in a **shared platform**.
- Invest in tools that **bridge cybersecurity and physical security**, such as:
  
    - IAM platforms (e.g. Microsoft Entra, [SailPoint](https://key2xs.com/integrations/sailpoint-iloq?hsLang=nl)),
    - Smart key systems (e.g. [ASSA ABLOY CLIQ](https://key2xs.com/integrations/assa-abloy-cliq?hsLang=nl) or [iLOQ](https://key2xs.com/integrations/iloq?hsLang=nl)),
    - Logging and auditing solutions (e.g. Key2XS).
  
   

### **Conclusion**

The NIS2 and CER directives are two sides of the same coin: **resilient, secure, and protected critical infrastructure**. By understanding their overlap and aligning efforts, organizations can reduce complexity, avoid duplicated effort, and strengthen their defenses against both digital and physical threats.

 

**About Key2XS**

Key2XS helps critical entities unify their physical and digital access strategies by integrating CLIQ smart keys into IAM platforms like Entra ID and SailPoint. Our platform supports full compliance with **NIS2 and CER**, providing automated provisioning, incident logging, and real-time auditing across your infrastructure and supply chain.

Learn more on how Key2XS can help your organization to become CER & NIS2 compliant at [https://key2xs.com/whitepaper-nis2-cer](https://key2xs.com/whitepaper-nis2-cer?hsLang=nl)

[Volledig bericht weergeven](https://key2xs.com/news/the-overlap-between-nis2-and-cer-what-critical-entities-need-to-know)

```json
{
  "@context" : "http://schema.org",
  "@type" : "BlogPosting",
  "author" : {
    "@type" : "Person",
    "name" : "Key2XS"
  },
  "dateModified" : "2026-07-20T17:44:12.073Z",
  "datePublished" : "2025-07-07T07:00:00Z",
  "headline" : "The Overlap Between NIS2 and CER: What Critical Entities Need to Know",
  "image" : {
    "@type" : "ImageObject",
    "height" : 1024,
    "url" : "https://49527559.fs1.hubspotusercontent-eu1.net/hubfs/49527559/image.png",
    "width" : 1536
  },
  "mainEntityOfPage" : "https://key2xs.com/news/the-overlap-between-nis2-and-cer-what-critical-entities-need-to-know",
  "publisher" : {
    "@type" : "Organization",
    "logo" : {
      "@type" : "ImageObject",
      "height" : 60,
      "url" : "/hs/hsstatic/content_shared_assets/static-1.4092/img/default-amp-logo.png",
      "width" : 60
    },
    "name" : "news"
  }
}
```