Cybersecurity refers to the classical practices formulated from the 1970s onward to protect computer systems, networks, and programs from digital attacks – such as malware, viruses, phishing, backdoors, and other attacks. These approaches and technologies were formulated before the diffusion of new, cryptography-based emerging technologies (blockchain, cryptocurrencies and more) and solutions. They primarily rely on protecting the network perimeter around centralized computing resources. With the arrival of cloud computing and the Internet of Things (IoT), cybersecurity is slowly moving towards securing perimeter-less distributed environments, but it still relies on centralized control.