The Union financial sector is regulated by a Single Rulebook and governed by a European system of financial supervision. Nonetheless, provisions tackling digital operational resiliencethe ability of a financial entity to build, assure and review its operational integrity and reliability by ensuring, either directly or indirectly through the use of services provided by ICT third-party service providers, the full range of ICT-related capabilities needed to address the security of the network and information systems which a financial entity uses, and which support the continued provision of financial services and their quality, including throughout disruptions and ICT security are not yet fully or consistently harmonised, despite digital operational resiliencethe ability of a financial entity to build, assure and review its operational integrity and reliability by ensuring, either directly or indirectly through the use of services provided by ICT third-party service providers, the full range of ICT-related capabilities needed to address the security of the network and information systems which a financial entity uses, and which support the continued provision of financial services and their quality, including throughout disruptions being vital for ensuring financial stability and market integrity in the digital age, and no less important than, for example, common prudential or market conduct standards. The Single Rulebook and system of supervision should therefore be developed to also cover digital operational resiliencethe ability of a financial entity to build, assure and review its operational integrity and reliability by ensuring, either directly or indirectly through the use of services provided by ICT third-party service providers, the full range of ICT-related capabilities needed to address the security of the network and information systems which a financial entity uses, and which support the continued provision of financial services and their quality, including throughout disruptions, by strengthening the mandates of competent authoritiesas defined in Article 46 to enable them to supervise the management of ICT riskany reasonably identifiable circumstance in relation to the use of network and information systems which, if materialised, may compromise the security of the network and information systems, of any technology dependent tool or process, of operations and processes, or of the provision of services by producing adverse effects in the digital or physical environment in the financial sector in order to protect the integrity and efficiency of the internal market, and to facilitate its orderly functioning.