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@Article { 2024_lohmoeller_sovereignty-survey,
   title = {The Unresolved Need for Dependable Guarantees on Security, Sovereignty, and Trust in Data Ecosystems},
   journal = {Data \& Knowledge Engineering},
   year = {2024},
   month = {5},
   day = {1},
   volume = {151},
   abstract = {Data ecosystems emerged as a new paradigm to facilitate the automated and massive exchange of data from heterogeneous information sources between different stakeholders. However, the corresponding benefits come with unforeseen risks as sensitive information is potentially exposed, questioning their reliability. Consequently, data security is of utmost importance and, thus, a central requirement for successfully realizing data ecosystems. Academia has recognized this requirement, and current initiatives foster sovereign participation via a federated infrastructure where participants retain local control over what data they offer to whom. However, recent proposals place significant trust in remote infrastructure by implementing organizational security measures such as certification processes before the admission of a participant. At the same time, the data sensitivity incentivizes participants to bypass the organizational security measures to maximize their benefit. This issue significantly weakens security, sovereignty, and trust guarantees and highlights that organizational security measures are insufficient in this context. In this paper, we argue that data ecosystems must be extended with technical means to (re)establish dependable guarantees. We underpin this need with three representative use cases for data ecosystems, which cover personal, economic, and governmental data, and systematically map the lack of dependable guarantees in related work. To this end, we identify three enablers of dependable guarantees, namely trusted remote policy enforcement, verifiable data tracking, and integration of resource-constrained participants. These enablers are critical for securely implementing data ecosystems in data-sensitive contexts.},
   keywords = {Data sharing; Confidentiality; Integrity protection; Data Markets; Distributed databases},
   tags = {internet-of-production; coat-ers; vesitrust},
   url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2024/2024-lohmoeller-data-sovereignty-survey.pdf},
   publisher = {Elsevier},
   ISSN = {0169-023X},
   DOI = {10.1016/j.datak.2024.102301},
   reviewed = {1},
   author = {Lohm{\"o}ller, Johannes and Pennekamp, Jan and Matzutt, Roman and Schneider, Carolin Victoria and Vlad, Eduard and Trautwein, Christian and Wehrle, Klaus}
}

@Article { 2024_pennekamp_supply-chain-survey,
   title = {An Interdisciplinary Survey on Information Flows in Supply Chains},
   journal = {ACM Computing Surveys},
   year = {2024},
   month = {2},
   day = {1},
   volume = {56},
   number = {2},
   abstract = {Supply chains form the backbone of modern economies and therefore require reliable information flows. In practice, however, supply chains face severe technical challenges, especially regarding security and privacy. In this work, we consolidate studies from supply chain management, information systems, and computer science from 2010--2021 in an interdisciplinary meta-survey to make this topic holistically accessible to interdisciplinary research. In particular, we identify a significant potential for computer scientists to remedy technical challenges and improve the robustness of information flows. We subsequently present a concise information flow-focused taxonomy for supply chains before discussing future research directions to provide possible entry points.},
   keywords = {information flows; data communication; supply chain management; data security; data sharing; systematic literature review},
   tags = {internet-of-production},
   url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2024/2024-pennekamp-supply-chain-survey.pdf},
   publisher = {ACM},
   ISSN = {0360-0300},
   DOI = {10.1145/3606693},
   reviewed = {1},
   author = {Pennekamp, Jan and Matzutt, Roman and Klinkm{\"u}ller, Christopher and Bader, Lennart and Serror, Martin and Wagner, Eric and Malik, Sidra and Spi{\ss}, Maria and Rahn, Jessica and G{\"u}rpinar, Tan and Vlad, Eduard and Leemans, Sander J. J. and Kanhere, Salil S. and Stich, Volker and Wehrle, Klaus}
}

@Inproceedings { 2023_lohmoeller_transparency,
   title = {Poster: Bridging Trust Gaps: Data Usage Transparency in Federated Data Ecosystems},
   year = {2023},
   month = {11},
   day = {27},
   keywords = {data usage control; data ecosystems; transparency logs},
   url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-lohmoeller-transparency.pdf},
   publisher = {ACM},
   booktitle = {Proceedings of the 2023 ACM SIGSAC Conference on
Computer and Communications Security (CCS ’23), November 26-30, 2023, Copenhagen, Denmark},
   event_place = {Copenhagen, Denmark},
   event_date = {November 26-30, 2023},
   ISBN = {979-8-4007-0050-7/23/11},
   DOI = {10.1145/3576915.3624371},
   reviewed = {1},
   author = {Lohm{\"o}ller, Johannes and Vlad, Eduard and Dahlmanns, Markus and Wehrle, Klaus}
}

@Inproceedings { 2023_pennekamp_benchmarking_comparison,
   title = {Designing Secure and Privacy-Preserving Information Systems for Industry Benchmarking},
   year = {2023},
   month = {6},
   day = {15},
   volume = {13901},
   pages = {489-505},
   abstract = {Benchmarking is an essential tool for industrial organizations to identify potentials that allows them to improve their competitive position through operational and strategic means. However, the handling of sensitive information, in terms of (i) internal company data and (ii) the underlying algorithm to compute the benchmark, demands strict (technical) confidentiality guarantees—an aspect that existing approaches fail to address adequately. Still, advances in private computing provide us with building blocks to reliably secure even complex computations and their inputs, as present in industry benchmarks. In this paper, we thus compare two promising and fundamentally different concepts (hardware- and software-based) to realize privacy-preserving benchmarks. Thereby, we provide detailed insights into the concept-specific benefits. Our evaluation of two real-world use cases from different industries underlines that realizing and deploying secure information systems for industry benchmarking is possible with today's building blocks from private computing.},
   note = {Lecture Notes in Computer Science (LNCS), Volume 13901},
   keywords = {real-world computing; trusted execution environments; homomorphic encryption; key performance indicators; benchmarking},
   tags = {internet-of-production},
   url = {https://www.comsys.rwth-aachen.de/fileadmin/papers/2023/2023-pennekamp-industry-benchmarking.pdf},
   publisher = {Springer},
   booktitle = {Proceedings of the 35th International Conference on Advanced Information Systems Engineering (CAiSE '23), June 12-16, 2023, Zaragoza, Spain},
   event_place = {Zaragoza, Spain},
   event_name = {35th International Conference on Advanced Information Systems Engineering (CAiSE '23)},
   event_date = {June 12-16, 2023},
   ISBN = {978-3-031-34559-3},
   ISSN = {0302-9743},
   DOI = {10.1007/978-3-031-34560-9_29},
   reviewed = {1},
   author = {Pennekamp, Jan and Lohm{\"o}ller, Johannes and Vlad, Eduard and Loos, Joscha and Rodemann, Niklas and Sapel, Patrick and Fink, Ina Berenice and Schmitz, Seth and Hopmann, Christian and Jarke, Matthias and Schuh, G{\"u}nther and Wehrle, Klaus and Henze, Martin}
}