On 15 September 2020, the European Central Bank (ECB) announced that members of the Euro Cyber Resilience Board for pan-European Financial Infrastructures have created the Cyber Information and Intelligence Sharing Initiative (CIISI-EU). This is a multilateral initiative which brings together a community of public and private entities.

The CIISI-EU initiative is further explained in a set of documents that provide insights into its main building blocks, the protocols it uses and the roles and responsibilities of the respective CIISI-EU members. They also provide an overview of the different stages of the initiative, i.e. design, implementation and operationalisation. The purpose of the documents is to provide overarching guidance, structure and inspiration to other entities, communities, sectors and jurisdictions, who may consider building their own cyber information and intelligence sharing initiative, in a flexible manner that suits their own specificities.