The existing rules on the security of network and information systems (NIS Directive), have been the first piece of EU-wide legislation on cybersecurity and paved the way for a significant change in mind-set, institutional and regulatory approach to cybersecurity in many Member States. In spite of their notable achievements and positive impact, they had to be updated because of the increasing degree of digitalisation and interconnectedness of our society and the rising number of cyber malicious activities at global level.