This work was supported by the European Commission under the Horizon 2020 Programme (H2020), as part of the projects LOCARD (https://locard.eu) (Grant Agreement no. 832735) and CyberSec4Europe (https://www.cybersec4europe.eu) (Grant Agreement no. 830929). F. Casino was supported by the Beatriu de Pinós programme of the Government of Catalonia (Grant No. 2020 BP 00035). The content of this article does not reflect the official opinion of the European Union. Responsibility for the information and views expressed therein lies entirely with the authors.