The security of any IT system depends largely on the secure design of each individual component that makes up the overall system. Current IT systems are multi-layered structures of hardware and software whose complexity is often difficult to penetrate even for experts. Commercial technologies are often non-transparent “black boxes” whose supply chain and production conditions are unknown. Vulnerabilities, which represent attack vectors, or “back doors” as hidden gateways, which the manufacturer has consciously or unconsciously integrated, can exist at practically every level of the IT system, including the hardware, i.e. the chips installed. Consequently, the actual security of a device can hardly be reliably assessed – not by an expert, and certainly not by a layman or an average end user with an affinity for IT. This represents a significant risk, especially in the professional environment, since sensitive operational information can be compromised regarding the classic protection goals of confidentiality, integrity and availability. Digital sovereignty in IT is largely non-existent today.