Essential and important entities should ensure the security of the network and information systems which they use in their activities. Those systems are primarily private network and information systems managed by the essential and important entities’ internal IT staff or the security of which has been outsourced. The cybersecurity risk-management measures and reporting obligations laid down in this Directive should apply to the relevant essential and important entities regardless of whether those entities maintain their network and information systems internally or outsource the maintenance thereof.

Essential and important entities should adopt a wide range of basic cyber hygiene practices, such as zero-trust principles, software updates, device configuration, network segmentation, identity and access management or user awareness, organise training for their staff and raise awareness concerning cyber threats, phishing or social engineering techniques. Furthermore, those entities should evaluate their own cybersecurity capabilities and, where appropriate, pursue the integration of cybersecurity enhancing technologies, such as artificial intelligence or machine-learning systems to enhance their capabilities and the security of network and information systems.

Responsibility for ensuring the security of network and information system lies, to a great extent, with essential and important entities. A culture of risk management, involving risk assessments and the implementation of cybersecurity risk-management measures appropriate to the risks faced, should be promoted and developed.

Cybersecurity risk-management measures should take into account the degree of dependence of the essential or important entity on network and information systems and include measures to identify any risks of incidents, to prevent, detect, respond to and recover from incidents and to mitigate their impact. The security of network and information systems should include the security of stored, transmitted and processed data. Cybersecurity risk-management measures should provide for systemic analysis, taking into account the human factor, in order to have a complete picture of the security of the network and information system.

As threats to the security of network and information systems can have different origins, cybersecurity risk-management measures should be based on an all-hazards approach, which aims to protect network and information systems and the physical environment of those systems from events such as theft, fire, flood, telecommunication or power failures, or unauthorised physical access and damage to, and interference with, an essential or important entity’s information and information processing facilities, which could compromise the availability, authenticity, integrity or confidentiality of stored, transmitted or processed data or of the services offered by, or accessible via, network and information systems. The cybersecurity risk-management measures should therefore also address the physical and environmental security of network and information systems by including measures to protect such systems from system failures, human error, malicious acts or natural phenomena, in line with European and international standards, such as those included in the ISO/IEC 27000 series. In that regard, essential and important entities should, as part of their cybersecurity risk-management measures, also address human resources security and have in place appropriate access control policies. Those measures should be consistent with Directive (EU) 2022/2557.

For the purpose of demonstrating compliance with cybersecurity risk-management measures and in the absence of appropriate European cybersecurity certification schemes adopted in accordance with Regulation (EU) 2019/881 of the European Parliament and of the Council , Member States should, in consultation with the Cooperation Group and the European Cybersecurity Certification Group, promote the use of relevant European and international standards by essential and important entities or may require entities to use certified ICT products, ICT services and ICT processes.

In order to avoid imposing a disproportionate financial and administrative burden on essential and important entities, the cybersecurity risk-management measures should be proportionate to the risks posed to the network and information system concerned, taking into account the state-of-the-art of such measures, and, where applicable, relevant European and international standards, as well as the cost for their implementation.

Cybersecurity risk-management measures should be proportionate to the degree of the essential or important entity’s exposure to risks and to the societal and economic impact that an incident would have. When establishing cybersecurity risk-management measures adapted to essential and important entities, due account should be taken of the divergent risk exposure of essential and important entities, such as the criticality of the entity, the risks, including societal risks, to which it is exposed, the entity’s size and the likelihood of occurrence of incidents and their severity, including their societal and economic impact.

Essential and important entities should ensure the security of the network and information systems which they use in their activities. Those systems are primarily private network and information systems managed by the essential and important entities’ internal IT staff or the security of which has been outsourced. The cybersecurity risk-management measures and reporting obligations laid down in this Directive should apply to the relevant essential and important entities regardless of whether those entities maintain their network and information systems internally or outsource the maintenance thereof.

Taking account of their cross-border nature, DNS service providers, TLD name registries, cloud computing service providers, data centre service providers, content delivery network providers, managed service providers, managed security service providers, providers of online marketplaces, of online search engines and of social networking services platforms, and trust service providers should be subject to a high degree of harmonisation at Union level. The implementation of cybersecurity risk-management measures with regard to those entities should therefore be facilitated by an implementing act.

Addressing risks stemming from an entity’s supply chain and its relationship with its suppliers, such as providers of data storage and processing services or managed security service providers and software editors, is particularly important given the prevalence of incidents where entities have been the victim of cyberattacks and where malicious perpetrators were able to compromise the security of an entity’s network and information systems by exploiting vulnerabilities affecting third-party products and services. Essential and important entities should therefore assess and take into account the overall quality and resilience of products and services, the cybersecurity risk-management measures embedded in them, and the cybersecurity practices of their suppliers and service providers, including their secure development procedures. Essential and important entities should in particular be encouraged to incorporate cybersecurity risk-management measures into contractual arrangements with their direct suppliers and service providers. Those entities could consider risks stemming from other levels of suppliers and service providers.

Among service providers, managed security service providers in areas such as incident response, penetration testing, security audits and consultancy play a particularly important role in assisting entities in their efforts to prevent, detect, respond to or recover from incidents. Managed security service providers have however also themselves been the target of cyberattacks and, because of their close integration in the operations of entities pose a particular risk. Essential and important entities should therefore exercise increased diligence in selecting a managed security service provider.

The competent authorities, in the context of their supervisory tasks, may also benefit from cybersecurity services such as security audits, penetration testing or incident responses.

In order to safeguard the security of public electronic communications networks and publicly available electronic communications services, the use of encryption technologies, in particular end-to-end encryption as well as data-centric security concepts, such as cartography, segmentation, tagging, access policy and access management, and automated access decisions, should be promoted. Where necessary, the use of encryption, in particular end-to-end encryption should be mandatory for providers of public electronic communications networks or of publicly available electronic communications services in accordance with the principles of security and privacy by default and by design for the purposes of this Directive. The use of end-to-end encryption should be reconciled with the Member States’ powers to ensure the protection of their essential security interests and public security, and to allow for the prevention, investigation, detection and prosecution of criminal offences in accordance with Union law. However, this should not weaken end-to-end encryption, which is a critical technology for the effective protection of data and privacy and the security of communications.

To further address key supply chain risks and assist essential and important entities operating in sectors covered by this Directive to appropriately manage supply chain and supplier related risks, the Cooperation Group, in cooperation with the Commission and ENISA, and where appropriate after consulting relevant stakeholders including from the industry, should carry out coordinated security risk assessments of critical supply chains, as carried out for 5G networks following Commission Recommendation (EU) 2019/534 , with the aim of identifying, per sector, the critical ICT services, ICT systems or ICT products, relevant threats and vulnerabilities. Such coordinated security risk assessments should identify measures, mitigation plans and best practices to counter critical dependencies, potential single points of failure, threats, vulnerabilities and other risks associated with the supply chain and should explore ways to further encourage their wider adoption by essential and important entities. Potential non-technical risk factors, such as undue influence by a third country on suppliers and service providers, in particular in the case of alternative models of governance, include concealed vulnerabilities or backdoors and potential systemic supply disruptions, in particular in the case of technological lock-in or provider dependency.

The coordinated security risk assessments of critical supply chains, in light of the features of the sector concerned, should take into account both technical and, where relevant, non-technical factors including those defined in Recommendation (EU) 2019/534, in the EU coordinated risk assessment of the cybersecurity of 5G networks and in the EU Toolbox on 5G cybersecurity agreed by the Cooperation Group. To identify the supply chains that should be subject to a coordinated security risk assessment, the following criteria should be taken into account: (i) the extent to which essential and important entities use and rely on specific critical ICT services, ICT systems or ICT products; (ii) the relevance of specific critical ICT services, ICT systems or ICT products for performing critical or sensitive functions, including the processing of personal data; (iii) the availability of alternative ICT services, ICT systems or ICT products; (iv) the resilience of the overall supply chain of ICT services, ICT systems or ICT products throughout their lifecycle against disruptive events; and (v) for emerging ICT services, ICT systems or ICT products, their potential future significance for the entities’ activities. Furthermore, particular emphasis should be placed on ICT services, ICT systems or ICT products that are subject to specific requirements stemming from third countries.

The cybersecurity obligations laid down in this Directive should be considered to be complementary to the requirements imposed on trust service providers under Regulation (EU) No 910/2014. Trust service providers should be required to take all appropriate and proportionate measures to manage the risks posed to their services, including in relation to customers and relying third parties, and to report incidents under this Directive. Such cybersecurity and reporting obligations should also concern the physical protection of the services provided. The requirements for qualified trust service providers laid down in Article 24 of Regulation (EU) No 910/2014 continue to apply.

Member States can assign the role of the competent authorities for trust services to the supervisory bodies under Regulation (EU) No 910/2014 in order to ensure the continuation of current practices and to build on the knowledge and experience gained in the application of that Regulation. In such a case, the competent authorities under this Directive should cooperate closely and in a timely manner with those supervisory bodies by exchanging relevant information in order to ensure effective supervision and compliance of trust service providers with the requirements laid down in this Directive and in Regulation (EU) No 910/2014. Where applicable, the CSIRT or the competent authority under this Directive should immediately inform the supervisory body under Regulation (EU) No 910/2014 about any notified significant cyber threat or incident affecting trust services as well as about any infringements by a trust service provider of this Directive. For the purpose of reporting, Member States can, where applicable, use the single entry point established to achieve a common and automatic incident reporting to both the supervisory body under Regulation (EU) No 910/2014 and the CSIRT or the competent authority under this Directive.

This Directive lays down a multiple-stage approach to the reporting of significant incidents in order to strike the right balance between, on the one hand, swift reporting that helps mitigate the potential spread of significant incidents and allows essential and important entities to seek assistance, and, on the other, in-depth reporting that draws valuable lessons from individual incidents and improves over time the cyber resilience of individual entities and entire sectors. In that regard, this Directive should include the reporting of incidents that, based on an initial assessment carried out by the entity concerned, could cause severe operational disruption of the services or financial loss for that entity or affect other natural or legal persons by causing considerable material or non-material damage. Such initial assessment should take into account, inter alia, the affected network and information systems, in particular their importance in the provision of the entity’s services, the severity and technical characteristics of a cyber threat and any underlying vulnerabilities that are being exploited as well as the entity’s experience with similar incidents. Indicators such as the extent to which the functioning of the service is affected, the duration of an incident or the number of affected recipients of services could play an important role in identifying whether the operational disruption of the service is severe.

Where essential or important entities become aware of a significant incident, they should be required to submit an early warning without undue delay and in any event within 24 hours. That early warning should be followed by an incident notification. The entities concerned should submit an incident notification without undue delay and in any event within 72 hours of becoming aware of the significant incident, with the aim, in particular, of updating information submitted through the early warning and indicating an initial assessment of the significant incident, including its severity and impact, as well as indicators of compromise, where available. A final report should be submitted not later than one month after the incident notification. The early warning should only include the information necessary to make the CSIRT, or where applicable the competent authority, aware of the significant incident and allow the entity concerned to seek assistance, if required. Such early warning, where applicable, should indicate whether the significant incident is suspected of being caused by unlawful or malicious acts, and whether it is likely to have a cross-border impact. Member States should ensure that the obligation to submit that early warning, or the subsequent incident notification, does not divert the notifying entity’s resources from activities related to incident handling that should be prioritised, in order to prevent incident reporting obligations from either diverting resources from significant incident response handling or otherwise compromising the entity’s efforts in that respect. In the event of an ongoing incident at the time of the submission of the final report, Member States should ensure that entities concerned provide a progress report at that time, and a final report within one month of their handling of the significant incident.

Where applicable, essential and important entities should communicate, without undue delay, to their service recipients any measures or remedies that they can take to mitigate the resulting risks from a significant cyber threat. Those entities should, where appropriate and in particular where the significant cyber threat is likely to materialise, also inform their service recipients of the threat itself. The requirement to inform those recipients of significant cyber threats should be met on a best efforts basis but should not discharge those entities from the obligation to take, at their own expense, appropriate and immediate measures to prevent or remedy any such threats and restore the normal security level of the service. The provision of such information about significant cyber threats to the service recipients should be free of charge and drafted in easily comprehensible language.

Providers of public electronic communications networks or of publicly available electronic communications services should implement security by design and by default, and inform their service recipients of significant cyber threats and of measures they can take to protect the security of their devices and communications, for example by using specific types of software or encryption technologies.

In order to simplify the reporting of information required under this Directive as well as to decrease the administrative burden for entities, Member States should provide technical means such as a single entry point, automated systems, online forms, user-friendly interfaces, templates, dedicated platforms for the use of entities, regardless of whether they fall within the scope of this Directive, for the submission of the relevant information to be reported. Union funding supporting the implementation of this Directive, in particular within the Digital Europe programme, established by Regulation (EU) 2021/694 of the European Parliament and of the Council , could include support for single entry points. Furthermore, entities are often in a situation where a particular incident, because of its features, needs to be reported to various authorities as a result of notification obligations included in various legal instruments. Such cases create additional administrative burden and could also lead to uncertainties with regard to the format and procedures of such notifications. Where a single entry point is established, Member States are encouraged also to use that single entry point for notifications of security incidents required under other Union law, such as Regulation (EU) 2016/679 and Directive 2002/58/EC. The use of such single entry point for reporting of security incidents under Regulation (EU) 2016/679 and Directive 2002/58/EC should not affect the application of the provisions of Regulation (EU) 2016/679 and Directive 2002/58/EC, in particular those relating to the independence of the authorities referred to therein. ENISA, in cooperation with the Cooperation Group, should develop common notification templates by means of guidelines to simplify and streamline the information to be reported under Union law and decrease the administrative burden on notifying entities.

Where it is suspected that an incident is related to serious criminal activities under Union or national law, Member States should encourage essential and important entities, on the basis of applicable criminal proceedings rules in accordance with Union law, to report incidents of a suspected serious criminal nature to the relevant law enforcement authorities. Where appropriate, and without prejudice to the personal data protection rules applying to Europol, it is desirable that coordination between the competent authorities and the law enforcement authorities of different Member States be facilitated by the European Cybercrime Centre (EC3) and ENISA.

In order to ensure uniform conditions for the implementation of this Directive, implementing powers should be conferred on the Commission to lay down the procedural arrangements necessary for the functioning of the Cooperation Group and the technical and methodological as well as sectoral requirements concerning the cybersecurity risk-management measures, and to further specify the type of information, the format and the procedure of incident, cyber threat and near miss notifications and of significant cyber threat communications, as well as cases in which an incident is to be considered to be significant. Those powers should be exercised in accordance with Regulation (EU) No 182/2011 of the European Parliament and of the Council.

In order to ensure a high common level of cybersecurity across the Union on the basis of this Directive, the power to adopt acts in accordance with Article 290 TFEU should be delegated to the Commission in respect of supplementing this Directive by specifying which categories of essential and important entities are to be required to use certain certified ICT products, ICT services and ICT processes or obtain a certificate under a European cybersecurity certification scheme. It is of particular importance that the Commission carry out appropriate consultations during its preparatory work, including at expert level, and that those consultations be conducted in accordance with the principles laid down in the Interinstitutional Agreement of 13 April 2016 on Better Law-Making . In particular, to ensure equal participation in the preparation of delegated acts, the European Parliament and the Council receive all documents at the same time as Member States’ experts, and their experts systematically have access to meetings of Commission expert groups dealing with the preparation of delegated acts.