LEET Security provides certification services for the Spanish National Security Scheme (ENS - Esquema Nacional de Seguridad), which is regulated by Royal Decree 311/2022. The ENS establishes basic principles and minimum requirements for adequate protection of information and services within the Spanish public sector, as defined in Law 40/2015. The service is accredited by ENAC according to the UNE-EN ISO/IEC 17065:2012 standard for certifying conformity with ENS. LEET Security operates as an independent certification body that assesses organizations against ENS requirements. The certification applies to information systems of public sector entities and extends to private sector entities that provide services or solutions to public sector organizations. The ENS requirements must be included in all contracts where services are provided by contractors, extending through the supply chain. LEET Security's assessment process combines ENS conformity certification with their proprietary cybersecurity rating methodology. This dual approach allows organizations to demonstrate compliance with both ENS requirements for public administration contracts and private sector vendor risk management standards. The rating methodology has been recognized by INCIBE and ENISA. The service addresses the mandatory compliance needs of Spanish public sector organizations and their suppliers, covering information security controls and service protection requirements specified in the ENS framework.