DEFENDER’s Human in the Loop Framework is a blockchains-based communications technological platform accompanied by an Android mobile application that enables Critical Energy Infrastructure (CEI) operators to receive from groups of First Responders’ notices related to the security of the Critical Infrastructure. All exchanged information is cryptographically encrypted and stored in consortium, permissionalble blockchains based on the Ethereum blockchain technology coupled with the IPFS distributed file system. The First Responders are able to share free text, images or video notifying the CEI operators on their findings or may choose to explicitly define the kind of attack and the attacked infrastructure though well-defined trial-tailored forms. All reports get directly anonymised since only the public key of the sender is known to the CEI operator. Last, the CEI operator is able to send directions to the First Responders (to all of them or individually) on how to react upon every reported incident..