8 [360] “online marketplace” means a digital service that allows consumers or traders, or both, as respectively defined in the European Union (Alternative Dispute Resolution for Consumer Disputes) Regulations 2015 (S.I. No. 343 of 2015) to conclude online sales or service contracts with traders either on the online marketplace’s website or on a trader’s website that uses computing services provided by the online marketplace; “online search engine” means a digital service that allows users to perform searches of, in principle, all websites or websites in a particular language on the basis of a query on any subject in the form of a keyword, phrase or other input, and returns links in which information related to the requested content can be found; “operator of essential services” means a person designated as an operator of essential services under Regulation 12; “Operators Register” means the Register of Operators of Essential Services established and maintained by a competent authority under Regulation 16; “personal data” means personal data within the meaning of— (a) the Data Protection Regulation, or (b) Part 5 of the Data Protection Act 2018 (No. 7 of 2018); “personal data breach” means a personal data breach under— (a) the Data Protection Regulation, or (b) Part 5 of the Data Protection Act 2018; “relevant authority in another member state” has the meaning assigned to it by Regulation 9; “relevant digital service provider” has the meaning assigned to it by Regulation 20; “representative” means any natural or legal person established in the State which is explicitly designated by a digital service provider which is not established in the Union to act on behalf of the digital service provider in respect of the provision by that digital service provider of its digital services in the Union; “risk” means any reasonably identifiable circumstance or event having a potential adverse effect on the security of network and information systems; “security of network and information systems” means the ability of a network and information system to resist, at a given level of confidence, any action that compromises the availability, authenticity, integrity or confidentiality of stored, transmitted or processed data or the related services offered by, or accessible via, those network and information systems;