611 citations · 1.4k across the 38 of their papers we have counts for
39 papers
An Interdisciplinary Survey on Information Flows in Supply Chains
Jan Pennekamp, Roman Matzutt, Christopher Klinkmüller +12
Supply chains form the backbone of modern economies and therefore require reliable information flows. In practice, however, supply chains face severe technical challenges, especial…
ECN with QUIC: Challenges in the Wild
Constantin Sander, Ike Kunze, Leo Blöcher +2
TCP and QUIC can both leverage ECN to avoid congestion loss and its retransmission overhead. However, both protocols require support of their remote endpoints and it took two decad…
Poster: Accountable Processing of Reported Street Problems
Roman Matzutt, Jan Pennekamp, Klaus Wehrle
Municipalities increasingly depend on citizens to file digital reports about issues such as potholes or illegal trash dumps to improve their response time. However, the responsible…
Secrets Revealed in Container Images: An Internet-wide Study on Occurrence and Impact
Markus Dahlmanns, Constantin Sander, Robin Decker +1
Containerization allows bundling applications and their dependencies into a single image. The containerization framework Docker eases the use of this concept and enables sharing im…
Evolving the Digital Industrial Infrastructure for Production: Steps Taken and the Road Ahead
Jan Pennekamp, Anastasiia Belova, Thomas Bergs +16
The Internet of Production (IoP) leverages concepts such as digital shadows, data lakes, and a World Wide Lab (WWL) to advance today's production. Consequently, it requires a techn…
Missed Opportunities: Measuring the Untapped TLS Support in the Industrial Internet of Things
Markus Dahlmanns, Johannes Lohmöller, Jan Pennekamp +3
The ongoing trend to move industrial appliances from previously isolated networks to the Internet requires fundamental changes in security to uphold secure and safe operation. Cons…
Scalable and Privacy-Focused Company-Centric Supply Chain Management
Eric Wagner, Roman Matzutt, Jan Pennekamp +4
Blockchain technology promises to overcome trust and privacy concerns inherent to centralized information sharing. However, current decentralized supply chain management systems do…
BP-MAC: Fast Authentication for Short Messages
Eric Wagner, Martin Serror, Klaus Wehrle +1
Resource-constrained devices increasingly rely on wireless communication for the reliable and low-latency transmission of short messages. However, especially the implementation of…
Collaboration is not Evil: A Systematic Look at Security Research for Industrial Use
Jan Pennekamp, Erik Buchholz, Markus Dahlmanns +6
Following the recent Internet of Things-induced trends on digitization in general, industrial applications will further evolve as well. With a focus on the domains of manufacturing…
Tracking the QUIC Spin Bit on Tofino
Ike Kunze, Constantin Sander, Klaus Wehrle +1
QUIC offers security and privacy for modern web traffic by closely integrating encryption into its transport functionality. In this process, it hides transport layer information of…
CoinPrune: Shrinking Bitcoin's Blockchain Retrospectively
Roman Matzutt, Benedikt Kalde, Jan Pennekamp +3
Popular cryptocurrencies continue to face serious scalability issues due to their ever-growing blockchains. Thus, modern blockchain designs began to prune old blocks and rely on re…
Challenges and Opportunities in Securing the Industrial Internet of Things
Martin Serror, Sacha Hack, Martin Henze +2
Given the tremendous success of the Internet of Things in interconnecting consumer devices, we observe a natural trend to likewise interconnect devices in industrial settings, refe…
Sharding and HTTP/2 Connection Reuse Revisited: Why Are There Still Redundant Connections?
Constantin Sander, Leo Blöcher, Klaus Wehrle +1
HTTP/2 and HTTP/3 avoid concurrent connections but instead multiplex requests over a single connection. Besides enabling new features, this reduces overhead and enables fair bandwi…
Video Conferencing and Flow-Rate Fairness: A First Look at Zoom and the Impact of Flow-Queuing AQM
Constantin Sander, Ike Kunze, Klaus Wehrle +1
Congestion control is essential for the stability of the Internet and the corresponding algorithms are commonly evaluated for interoperability based on flow-rate fairness. In contr…
L, Q, R, and T -- Which Spin Bit Cousin Is Here to Stay?
Ike Kunze, Klaus Wehrle, Jan Rüth
Network operators utilize traffic monitoring to locate and fix faults or performance bottlenecks. This often relies on intrinsic protocol semantics, e.g., sequence numbers, that ma…
A novel receiver design for energy packet-based dispatching
Friedrich Wiegel, Edoardo De Din, Antonello Monti +4
A steadily growing share of renewable energies with uctuating and decentralized generation as well as rising peak loads require novel solutions to ensure the reliability of electri…
Easing the Conscience with OPC UA: An Internet-Wide Study on Insecure Deployments
Markus Dahlmanns, Johannes Lohmöller, Ina Berenice Fink +3
Due to increasing digitalization, formerly isolated industrial networks, e.g., for factory and process automation, move closer and closer to the Internet, mandating secure communic…
Symbolic Partial-Order Execution for Testing Multi-Threaded Programs
Daniel Schemmel, Julian Büning, César Rodríguez +2
We describe a technique for systematic testing of multi-threaded programs. We combine Quasi-Optimal Partial-Order Reduction, a state-of-the-art technique that tackles path explosio…
Utilizing Public Blockchains for the Sybil-Resistant Bootstrapping of Distributed Anonymity Services
Roman Matzutt, Jan Pennekamp, Erik Buchholz +1
Distributed anonymity services, such as onion routing networks or cryptocurrency tumblers, promise privacy protection without trusted third parties. While the security of these ser…
How to Securely Prune Bitcoin's Blockchain
Roman Matzutt, Benedikt Kalde, Jan Pennekamp +3
Bitcoin was the first successful decentralized cryptocurrency and remains the most popular of its kind to this day. Despite the benefits of its blockchain, Bitcoin still faces seri…
Putting Privacy into Perspective -- Comparing Technical, Legal, and Users' View of Data Sensitivity
Eva-Maria Schomakers, Chantal Lidynia, Dirk Müllmann +4
Web 2.0, social media, cloud computing, and IoT easily connect people around the globe, overcoming time and space barriers, and offering manifold benefits. However, the technologic…
Perceiving QUIC: Do Users Notice or Even Care?
Jan Rüth, Konrad Wolsing, Klaus Wehrle +1
QUIC, as the foundation for HTTP/3, is becoming an Internet reality. A plethora of studies already show that QUIC excels beyond TCP+TLS+HTTP/2. Yet, these studies compare a highly…
DeePCCI: Deep Learning-based Passive Congestion Control Identification
Constantin Sander, Jan Rüth, Oliver Hohlfeld +1
Transport protocols use congestion control to avoid overloading a network. Nowadays, different congestion control variants exist that influence performance. Studying their use is t…
A Performance Perspective on Web Optimized Protocol Stacks: TCP+TLS+HTTP/2 vs. QUIC
Konrad Wolsing, Jan Rüth, Klaus Wehrle +1
Existing performance comparisons of QUIC and TCP compared an optimized QUIC to an unoptimized TCP stack. By neglecting available TCP improvements inherently included in QUIC, compa…