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Die Potenziale der Industrie 4.0 für produzierende Unternehmen sind enorm, drohen aufgrund unzureichender IT-Sicherheitsmaßnahmen jedoch ungenutzt zu bleiben. Am Fraunhofer IPT wurde daher der „Production Security Readiness Check“ (PSRC) entwickelt, der Unternehmen eine Selbsteinschätzung bzgl. des IT-Sicherheit-Reifegrads ermöglicht. Der PSRC wird in diesem Beitrag vorgestellt und darüber hinaus das Ergebnis einer Studie von 28 Unternehmen, die den Check durchgeführt haben, beleuchtet.

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Dynamic and flexible business relationships are expected to become more important in the future to accommodate specialized change requests or small-batch production. Today, buyers and sellers must disclose sensitive information on products upfront before the actual manufacturing. However, without a trust relation, this situation is precarious for the involved companies as they fear for their competitiveness. Related work overlooks this issue so far: Existing approaches only protect the information of a single party only, hindering dynamic and on-demand business relationships. To account for the corresponding research gap of inadequately privacy-protected information and to deal with companies without an established trust relation, we pursue the direction of innovative privacy-preserving purchase inquiries that seamlessly integrate into today’s established supplier management and procurement processes. Utilizing well-established building blocks from private computing, such as private set intersection and homomorphic encryption, we propose two designs with slightly different privacy and performance implications to securely realize purchase inquiries over the Internet. In particular, we allow buyers to consider more potential sellers without sharing sensitive information and relieve sellers of the burden of repeatedly preparing elaborate yet discarded offers. We demonstrate our approaches’ scalability using two real-world use cases from the domain of production technology. Overall, we present deployable designs that offer two-way privacy for purchase inquiries and, in turn, fill a gap that currently hinders establishing dynamic and flexible business relationships. In the future, we expect significantly increasing research activity in this overlooked area to address the needs of an evolving production landscape.