The potential systemic cyber risk associated with the use of ICT infrastructures that enable the operation of payment systems and the provision of payment processing activities should be duly addressed at Union level through harmonised digital resilience rules. To that effect, the Commission should swiftly assess the need for reviewing the scope of this Regulation while aligning such review with the outcome of the comprehensive review envisaged under Directive (EU) 2015/2366. Numerous large-scale attacks over the past decade demonstrate how payment systems have become exposed to cyber threatsas defined in Article 2, point (8), of Regulation (EU) 2019/881. Placed at the core of the payment services chain and showing strong interconnections with the overall financial system, payment systems and payment processing activities acquired a critical significance for the functioning of the Union financial markets. Cyber-attacksa malicious ICT-related incident caused by means of an attempt perpetrated by any threat actor to destroy, expose, alter, disable, steal or gain unauthorised access to, or make unauthorised use of, an asset on such systems can cause severe operational business disruptions with direct repercussions on key economic functions, such as the facilitation of payments, and indirect effects on related economic processes. Until a harmonised regime and the supervision of operators of payment systems and processing entities are put in place at Union level, Member States may, with a view to applying similar market practices, draw inspiration from the 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 requirements laid down by this Regulation, when applying rules to operators of payment systems and processing entities supervised under their own jurisdictions.