In order to take advantage of internal resources available at corporate level, this Regulation should allow the use of internal testers for the purposes of carrying out TLPT(threat-led penetration testing) a framework that mimics the tactics, techniques and procedures of real-life threat actors perceived as posing a genuine cyber threat, that delivers a controlled, bespoke, intelligence-led (red team) test of the financial entity’s critical live production systems, provided there is supervisory approval, no conflicts of interest, and periodical alternation of the use of internal and external testers (every three tests), while also requiring the provider of the threat intelligenceinformation that has been aggregated, transformed, analysed, interpreted or enriched to provide the necessary context for decision-making and to enable relevant and sufficient understanding in order to mitigate the impact of an ICT-related incident or of a cyber threat, including the technical details of a cyber-attack, those responsible for the attack and their modus operandi and motivations in the TLPT(threat-led penetration testing) a framework that mimics the tactics, techniques and procedures of real-life threat actors perceived as posing a genuine cyber threat, that delivers a controlled, bespoke, intelligence-led (red team) test of the financial entity’s critical live production systems to always be external to the financial entity. The responsibility for conducting TLPT(threat-led penetration testing) a framework that mimics the tactics, techniques and procedures of real-life threat actors perceived as posing a genuine cyber threat, that delivers a controlled, bespoke, intelligence-led (red team) test of the financial entity’s critical live production systems should remain fully with the financial entity. Attestations provided by authorities should be solely for the purpose of mutual recognition and should not preclude any follow-up action needed to address the 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 to which the financial entity is exposed, nor should they be seen as a supervisory endorsement of a financial entity’s 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 management and mitigation capabilities.