This Deliverable focuses on collecting cyber security training requirements and identifying the training needs of different stakeholders (coming from the targeted critical sectors of telecom, energy, healthcare, and maritime) at national, regional, and European level. To achieve this, a systematic requirements elicitation approach will be established, having a two-fold focus: a) to identify the requirements and specific needs of the participating stakeholders, which represent different critical sectors and with different needs with regard to IT security; and b) to substantially engage the external stakeholders so as to gain feedback regarding their needs and priorities in the frame of the project, through the realization of interviews with their users expressing significant interest on the project’s technologies and vision, and through the large-scale circulation of structured questionnaires, utilizing the dissemination channels of the participating partners. These requirements will be used for the customization of the Cyber Range Platform (T2.4 and WP4) and the establishment of the training programs and the specification of the training scenarios (WP3), which must demonstrate these requirements. This Deliverable will also include a preliminary analysis of Cyber-range training requirements imposed by the existing national and European legal and regulatory framework and regime (e.g. (NIS Directive and the General Data Protection Regulation (GDPR)). The identification of relevant sets of legislation (e.g. regarding data protection, privacy and security) and ethical principles will lead to a high-level description of provisions which will need to be taken into account in the course of the project and the development of all the cyber range training outcomes within. The aim of this Deliverable is to depict all relevant frameworks in order to assure that differing legal and regulatory constraints and internationally agreed standards for security, privacy and data protection are met. The deliverable will also include appropriate Key Performance Indicators (KPIs).