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Regulatory Brief · NIS2

China CSL and DSL vs EU NIS2: data localization conflict matrix for multinationals

24 May 2026By NexCyber Editorial NIS2

In today's interconnected global landscape, multinational corporations often find themselves navigating complex regulatory environments across different jurisdictions. A European automotive manufacturer with research and development facilities in Shanghai, for instance, must comply with both the French National Cybersecurity Agency (ANSSI) and the Cyberspace Administration of China (CAC). This dual compliance scenario highlights the intricate challenges posed by the overlapping requirements of t

In today's interconnected global landscape, multinational corporations often find themselves navigating complex regulatory environments across different jurisdictions. A European automotive manufacturer with research and development facilities in Shanghai, for instance, must comply with both the French National Cybersecurity Agency (ANSSI) and the Cyberspace Administration of China (CAC). This dual compliance scenario highlights the intricate challenges posed by the overlapping requirements of the Chinese Cybersecurity Law (CSL) and Data Security Law (DSL) alongside the EU's NIS2 Directive. Understanding where these regimes intersect and diverge is crucial for multinationals striving to maintain compliance and operational efficiency.

Understanding China's CSL and DSL

Critical Information Infrastructure and Important Data

China's Cybersecurity Law (CSL) and Data Security Law (DSL) impose stringent data localization requirements, particularly on entities classified as operating Critical Information Infrastructure (CII) or handling "important data." The CSL mandates that operators of CII store personal information and important data collected and generated in China within the country's borders. The DSL further elaborates on the concept of important data, emphasizing the need for data security assessments before any cross-border data transfers are undertaken.

Cross-Border Data Transfer and Security Assessments

For multinationals, the requirement to conduct security assessments for cross-border data transfers is a significant operational consideration. The DSL specifies that such transfers must undergo a security assessment conducted by relevant Chinese authorities, typically the CAC. This process involves evaluating the necessity of the transfer, the potential risks involved, and the measures in place to mitigate these risks. Compliance with these requirements is non-negotiable for companies seeking to maintain their operational presence in China.

EU NIS2's Extraterritorial Scope

When EU Entities Trigger Chinese Review

The EU's NIS2 Directive, which comes into force on 17 October 2024, extends its reach beyond the borders of the European Union. This extraterritorial scope means that EU-based entities with operations or supply chains in China could trigger reviews under Chinese law. NIS2 mandates that essential and important entities conduct thorough supplier audits, which could include Chinese subsidiaries or partners. These audits are designed to ensure compliance with cybersecurity standards and to protect the integrity of the EU's digital infrastructure.

Supplier Audit Duties and Cross-Border Implications

Under NIS2, the supplier audit duties require EU entities to scrutinize their entire supply chain, including any cross-border data flows. This obligation can lead to conflicts with Chinese data localization requirements, especially if the audits necessitate data transfers that contravene Chinese regulations. The challenge for multinationals is to balance these conflicting demands while ensuring compliance with both EU and Chinese laws.

Conflict Matrix: Six Scenarios Where Rules Collide

Navigating the regulatory landscape where Chinese and EU laws intersect can be daunting. Here are six scenarios where these rules may collide, creating compliance challenges for multinationals:

  1. 1Data Localization vs. Cross-Border Supplier Audits: An EU entity's requirement to conduct supplier audits may necessitate data transfers from China to the EU, conflicting with China's data localization mandates.
  1. 1Security Assessments vs. NIS2 Compliance: The CSL and DSL's requirement for security assessments of cross-border data transfers may delay or complicate compliance with NIS2's supplier audit timelines.
  1. 1CII Designation vs. EU Operations: A company designated as operating CII in China may face restrictions on data transfers that are critical for its EU operations, affecting business continuity.
  1. 1Important Data Classification vs. EU Data Sharing: Data classified as "important" under Chinese law may be subject to restrictions that hinder necessary data sharing with EU partners or subsidiaries.
  1. 1Regulatory Reporting Conflicts: The need to report cybersecurity incidents to both Chinese and EU authorities could lead to conflicts in reporting timelines and requirements.
  1. 1Divergent Risk Assessment Standards: Differences in risk assessment standards between the CSL/DSL and NIS2 may lead to conflicting compliance strategies and resource allocation.

Next Step with NexCyber

Navigating the complexities of multi-jurisdictional compliance requires a strategic approach and robust tools. NexCyber offers a comprehensive compliance register designed to help multinationals manage their obligations under both the Chinese CSL and DSL, as well as the EU NIS2 Directive. By leveraging NexCyber's platform, companies can streamline their compliance processes, ensuring that they meet the stringent requirements of both jurisdictions without compromising their operational efficiency.

For more information on how NexCyber can assist your organization in achieving seamless compliance across borders, visit [NexCyber's compliance assessment tool](https://www.nexcyber.eu/assess?utm_source=editorial&utm_campaign=china-csl-vs-eu-nis2-data-localization).