Regulation 18 Incident notification by operators of essential services
(a) An operator of essential services shall notify the CSIRT in accordance with paragraph (2) of any incident concerning it that has a significant impact on the continuity of an essential service provided by it in respect of which it is designated as an operator of essential services.
(b) An operator of essential services who relies on a third-party digital service provider for the provision of an essential service in respect of which it is designated as an operator of essential services shall notify the CSIRT in accordance with paragraph (2) of an incident affecting the digital service provider which has a significant impact on the continuity of the essential service provided by the operator.
(2) A notification in respect of an incident shall be made under paragraph (1) without delay after the incident occurs and, in any event, not later than 72 hours after the operator of essential services concerned becomes aware of the occurrence of that incident.
(3) A notification made under paragraph (1) shall, to the extent to which the operator concerned may reasonably be expected to have such information, contain the following information: