TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Stodt, Jan A1 - Schönle, Daniel A1 - Reich, Christoph A1 - Ghovanlooy Ghajar, Fatemeh A1 - Welte, Dominik A1 - Sikora, Axel T1 - Security Audit of a Blockchain-Based Industrial Application Platform JF - Algorithms N2 - In recent years, both the Internet of Things (IoT) and blockchain technologies have been highly influential and revolutionary. IoT enables companies to embrace Industry 4.0, the Fourth Industrial Revolution, which benefits from communication and connectivity to reduce cost and to increase productivity through sensor-based autonomy. These automated systems can be further refined with smart contracts that are executed within a blockchain, thereby increasing transparency through continuous and indisputable logging. Ideally, the level of security for these IoT devices shall be very high, as they are specifically designed for this autonomous and networked environment. This paper discusses a use case of a company with legacy devices that wants to benefit from the features and functionality of blockchain technology. In particular, the implications of retrofit solutions are analyzed. The use of the BISS:4.0 platform is proposed as the underlying infrastructure. BISS:4.0 is intended to integrate the blockchain technologies into existing enterprise environments. Furthermore, a security analysis of IoT and blockchain present attacks and countermeasures are presented that are identified and applied to the mentioned use case. KW - Blockchain KW - Distributed ledger KW - Legacy machines KW - Maintenance KW - Shop floor Y1 - 2021 UN - https://nbn-resolving.org/urn:nbn:de:bsz:fn1-opus4-77948 SN - 1999-4893 SS - 1999-4893 U6 - https://doi.org/10.3390/a14040121 DO - https://doi.org/10.3390/a14040121 VL - 14.2021 IS - 4 SP - 21 S1 - 21 ER -