Stefan Köpsell

According to our database, Stefan Köpsell authored at least 59 papers between 2000 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

Post-Quantum Access Control with Application to Secure Data Retrieval.

Behzad Abdolmaleki, Hannes Blümel, Giacomo Fenzi, Homa Khajeh, Stefan Köpsell, Maryam Zarezadeh

IACR Cryptol. ePrint Arch., 2024

Conceptualizing Trustworthiness and Trust in Communications.

Gerhard P. Fettweis, Patricia Grünberg, Tim Hentschel, Stefan Köpsell

CoRR, 2024

A Model-oriented Reasoning Framework for Privacy Analysis of Complex Systems.

Sebastian Rehms, Stefan Köpsell, Verena Klös, Florian Tschorsch

CoRR, 2024

Exploring Privacy Issues in Mission Critical Communication: Navigating 5G and Beyond Networks.

Prajnamaya Dass, Marcel Gräfenstein, Stefan Köpsell

CoRR, 2024

Gaining Back the Control Over Identity Attributes: Access Management Systems Based on Self-Sovereign Identity.

Kenneth-Raphael Keil, Ricardo Bochnia, Ivan Gudymenko, Stefan Köpsell, Jürgen Anke

Proceedings of the Open Identity Summit 2024, Porto, Portugal, June 20-21, 2024, 2024

Enabling Mobility-Oriented JCAS in 6G Networks: An Architecture Proposal.

Philipp Rosemann, Sanket Partani, Marc Miranda, Jannik Mähn, Michael Karrenbauer, William Meli, Rodrigo Hernangómez, Maximilian Lübke, Jacob Kochems, Stefan Köpsell, Anosch Aziz-Koch, Ramez Askar, Julia Beuster, Oliver Blume, Norman Franchi, Reiner S. Thomä, Slawomir Stanczak, Hans D. Schotten

Proceedings of the 4th IEEE International Symposium on Joint Communications & Sensing, 2024

Enhancing Frequency Hopping Security in ISAC Systems: A Physical Layer Security Approach.

Ali Khandan Boroujeni, Ghazal Bagheri, Stefan Köpsell

Proceedings of the 4th IEEE International Symposium on Joint Communications & Sensing, 2024

Machine Learning-Based Vector Quantization for Secret Key Generation in Physical Layer Security.

Ghazal Bagheri, Ali Khandan Boroujeni, Stefan Köpsell

Proceedings of the Global Information Infrastructure and Networking Symposium, 2024

Addressing Privacy Concerns in Joint Communication and Sensing for 6G Networks: Challenges and Prospects.

Prajnamaya Dass, Sonika Ujjwal, Jiri Novotny, Yevhen Zolotavkin, Zakaria Laaroussi, Stefan Köpsell

Proceedings of the Privacy Technologies and Policy - 12th Annual Privacy Forum, 2024

2023

Enabling Mobility-Oriented JCAS in 6G Networks: An Architecture Proposal.

Philipp Rosemann, Sanket Partani, Marc Miranda, Jannik Mähn, Michael Karrenbauer, William Meli, Rodrigo Hernangómez, Maximilian Lübke, Jacob Kochems, Stefan Köpsell, Anosch Aziz-Koch, Julia Beuster, Oliver Blume, Norman Franchi, Reiner S. Thomä, Slawomir Stanczak, Hans D. Schotten

CoRR, 2023

Secure and Dynamic Publish/Subscribe: LCMsec.

Moritz Jasper, Stefan Köpsell

Proceedings of the 98th IEEE Vehicular Technology Conference, 2023

Improving Unlinkability in C-ITS: A Methodology For Optimal Obfuscation.

Yevhen Zolotavkin, Yurii Baryshev, Vitalii Lukichov, Jannik Mähn, Stefan Köpsell

Proceedings of the 9th International Conference on Information Systems Security and Privacy, 2023

2022

Context-Aware Security for 6G Wireless: The Role of Physical Layer Security.

Arsenia Chorti, André Noll Barreto, Stefan Köpsell, Marco Zoli, Marwa Chafii, Philippe Sehier, Gerhard P. Fettweis, H. Vincent Poor

IEEE Commun. Stand. Mag., 2022

A Case for Practical Configuration Management Using Hardware-based Security Tokens.

Tim Lackorzynski, Max Ostermann, Stefan Köpsell, Hermann Härtig

CoRR, 2022

Secure and Efficient Tunneling of MACsec for Modern Industrial Use Cases.

Tim Lackorzynski, Sebastian Rehms, Tao Li, Stefan Köpsell, Hermann Härtig

CoRR, 2022

Transparency for Bystanders in IoT regarding audiovisual Recordings.

Stephan Escher, Katrin Etzrodt, Benjamin Weller, Stefan Köpsell, Thorsten Strufe

Proceedings of the 2022 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events, 2022

Trustworthy Computing for O-RAN: Security in a Latency-Sensitive Environment.

Sebastian Haas, Mattis Hasler, Friedrich Pauls, Stefan Köpsell, Nils Asmussen, Michael Roitzsch, Gerhard P. Fettweis

Proceedings of the IEEE Globecom 2022 Workshops, 2022

2021

Enabling and Optimizing MACsec for Industrial Environments.

Tim Lackorzynski, Gregor Garten, Jan Sönke Huster, Stefan Köpsell, Hermann Härtig

IEEE Trans. Ind. Informatics, 2021

Towards Intelligent Context-Aware 6G Security.

André Noll Barreto, Stefan Köpsell, Arsenia Chorti, Bertram Poettering, Jens Jelitto, Julia Hesse, Jonathan Boole, Konrad Rieck, Marios Kountouris, Dave Singelée, Kumar Ashwinee

CoRR, 2021

How well can your car be tracked: Analysis of the European C-ITS pseudonym scheme.

Stephan Escher, Markus Sontowski, Knut Berling, Stefan Köpsell, Thorsten Strufe

Proceedings of the 93rd IEEE Vehicular Technology Conference, 2021

2020

Physical-Layer-Security Box: a concept for time-frequency channel-reciprocity key generation.

Marco Zoli, André Noll Barreto, Stefan Köpsell, Padmanava Sen, Gerhard P. Fettweis

EURASIP J. Wirel. Commun. Netw., 2020

Enabling and Optimizing MACsec for Industrial Environments (Extended Abstract).

Tim Lackorzynski, Gregor Garten, Jan Sönke Huster, Stefan Köpsell, Hermann Härtig

Proceedings of the 16th IEEE International Conference on Factory Communication Systems, 2020

Switchbox - Low-latency Fail-safe Assurance of Availability in Industrial Environments.

Tim Lackorzynski, Philipp Rietzsch, Stefan Köpsell

Proceedings of the 2020 IEEE International Conference on Industrial Technology, 2020

Transparent Microsegmentation in Smart Home IoT Networks.

Amr Osman, Armin Wasicek, Stefan Köpsell, Thorsten Strufe

Proceedings of the 3rd USENIX Workshop on Hot Topics in Edge Computing, 2020

Towards Transparency in the Internet of Things.

Stephan Escher, Benjamin Weller, Stefan Köpsell, Thorsten Strufe

Proceedings of the Privacy Technologies and Policy - 8th Annual Privacy Forum, 2020

2019

Secure end-to-end processing of smart metering data.

Andrey Brito, Christof Fetzer, Stefan Köpsell, Peter R. Pietzuch, Marcelo Pasin, Pascal Felber, Keiko Verônica Ono Fonseca, Marcelo de Oliveira Rosa, Luiz Celso Gomes Jr., Rodrigo Jardim Riella, Charles B. Prado, Luiz Fernando Rust da Costa Carmo, Daniel E. Lucani, Márton Ákos Sipos, László Nagy, Marcell Fehér

J. Cloud Comput., 2019

A Comparative Study on Virtual Private Networks for Future Industrial Communication Systems.

Tim Lackorzynski, Stefan Köpsell, Thorsten Strufe

Proceedings of the 15th IEEE International Workshop on Factory Communication Systems, 2019

Towards Secure Communication for High-Density Longitudinal Platooning.

Markus Sontowski, Stefan Köpsell, Thorsten Strufe, Christian Zimmermann, Andreas Weinand, Hans D. Schotten, Norbert Bissmeyer

Proceedings of the 90th IEEE Vehicular Technology Conference, 2019

Attribute-Based Credentials in High-Density Platooning.

Christian Zimmermann, Markus Sontowski, Stefan Köpsell

Proceedings of the ACM Computer Science in Cars Symposium, 2019

2018

Cloud Challenge: Secure End-to-End Processing of Smart Metering Data.

Andrey Brito, Christof Fetzer, Stefan Köpsell, Marcelo Pasin, Pascal Felber, Keiko Ono Fonseca, Marcelo de Oliveira Rosa, Luiz Celso Gomes Jr., Rodrigo Jardim Riella, Charles B. Prado, Luiz F. R. da Costa Carmo, Daniel E. Lucani, Márton Sipos, László Nagy, Marcell Fehér

Proceedings of the 2018 IEEE/ACM International Conference on Utility and Cloud Computing Companion, 2018

Transparent Low-Latency Network Anonymisation for Mobile Devices.

Martin Byrenheid, Stefan Köpsell, Alexander Naumenko, Thorsten Strufe

Proceedings of the Security and Privacy in Communication Networks, 2018

Chains and Whips - An approach to lighweight MACs.

Paul Walther, Stefan Köpsell, Frederik Armknecht, Gene Tsudik, Thorsten Strufe

Proceedings of the 28. Krypto-Tag, 2018

2017

Integrating Privacy-Enhancing Technologies into the Internet Infrastructure.

David Harborth, Dominik Herrmann, Stefan Köpsell, Sebastian Pape, Christian Roth, Hannes Federrath, Dogan Kesdogan, Kai Rannenberg

CoRR, 2017

Analysis of Mozambican websites: How do they protect their users?

Ambrosio Patricio Vumo, Josef Spillner, Stefan Köpsell

Proceedings of the 2017 Information Security for South Africa, 2017

SecureCloud: Secure big data processing in untrusted clouds.

Florian Kelbert, Franz Gregor, Rafael Pires, Stefan Köpsell, Marcelo Pasin, Aurelien Havet, Valerio Schiavoni, Pascal Felber, Christof Fetzer, Peter R. Pietzuch

Proceedings of the Design, Automation & Test in Europe Conference & Exhibition, 2017

2014

A simple and secure e-ticketing system for intelligent public transportation based on NFC.

Ivan Gudymenko, Felipe Sousa, Stefan Köpsell

Proceedings of the First International Conference on IoT in Urban Space, 2014

2013

IPv6 Address Obfuscation by Intermediate Middlebox in Coordination with Connected Devices.

Florent Fourcot, Laurent Toutain, Stefan Köpsell, Frédéric Cuppens, Nora Cuppens-Boulahia

Proceedings of the Advances in Communication Networking, 2013

2011

Anonymous Web Browsing and Publishing.

Stefan Köpsell

Proceedings of the Encyclopedia of Cryptography and Security, 2nd Ed., 2011

Identity and Privacy Issues Throughout Life.

Jaromir Dobias, Marit Hansen, Stefan Köpsell, Maren Raguse, Arnold Roosendaal, Andreas Pfitzmann, Sandra Steinbrecher, Katalin Storf, Harald Zwingelberg

Proceedings of the Privacy and Identity Management for Life, 2011

Open Source Contributions.

Jan Camenisch, Benjamin Kellermann, Stefan Köpsell, Stefano Paraboschi, Franz-Stefan Preiss, Stefanie Pötzsch, Dave Raggett, Pierangela Samarati, Karel Wouters

Proceedings of the Privacy and Identity Management for Life, 2011

2010

Entwicklung und Betrieb eines Anonymisierungsdienstes für das WWW.

Stefan Köpsell

PhD thesis, 2010

Trained to accept?: a field experiment on consent dialogs.

Rainer Böhme, Stefan Köpsell

Proceedings of the 28th International Conference on Human Factors in Computing Systems, 2010

2009

Risiken der Vorratsspeicherung - Grenzen der Nutzungsüberwachung.

Andreas Pfitzmann, Stefan Köpsell

Datenschutz und Datensicherheit, 2009

Secure Logging of Retained Data for an Anonymity Service.

Stefan Köpsell, Petr Svenda

Proceedings of the Privacy and Identity Management for Life, 2009

2008

Data Retention and Anonymity Services - Introducing a New Class of Realistic Adversary Models.

Stefan Berthold, Rainer Böhme, Stefan Köpsell

Proceedings of the Future of Identity in the Information Society, 2008

2007

Masterstudiengang Datenschutz und Datensicherheit in Russland - Zu einer international harmonisierten Datenschutzausbildung.

René Balzer, Horst Lazarek, Stefan Köpsell

Datenschutz und Datensicherheit, 2007

2006

Vergleich der Verfahren zur Verhinderung von Replay-Angriffen der Anonymisierungsdienste AN.ON und Tor.

Stefan Köpsell

Proceedings of the Sicherheit 2006: Sicherheit, 2006

Revocable Anonymity.

Stefan Köpsell, Rolf Wendolsky, Hannes Federrath

Proceedings of the Emerging Trends in Information and Communication Security, 2006

Low Latency Anonymous Communication - How Long Are Users Willing to Wait?.

Stefan Köpsell

Proceedings of the Emerging Trends in Information and Communication Security, 2006

2004

How to achieve blocking resistance for existing systems enabling anonymous web surfing.

Stefan Köpsell, Ulf Hillig

Proceedings of the 2004 ACM Workshop on Privacy in the Electronic Society, 2004

On the PET Workshop Panel "Mix Cascades Versus Peer-to-Peer: Is One Concept Superior?".

Rainer Böhme, George Danezis, Claudia Díaz, Stefan Köpsell, Andreas Pfitzmann

Proceedings of the Privacy Enhancing Technologies, 4th International Workshop, 2004

2003

Erfahrungen mit dem Betrieb eines Anonymisierungsdienstes.

Stefan Köpsell, Hannes Federrath, Marit Hansen

Datenschutz und Datensicherheit, 2003

Modelling Unlinkability.

Sandra Steinbrecher, Stefan Köpsell

Proceedings of the Privacy Enhancing Technologies, Third International Workshop, 2003

Bezahlsystem für einen Mixkaskaden-basierten Anonymisierungsdienst.

Stefan Köpsell, Andreas Müller

Proceedings of the 33. Jahrestagung der Gesellschaft für Informatik, Schwerpunkt "Sicherheit - Schutz und Zuverlässigkeit", INFORMATIK 2003 - Mit Sicherheit Informatik, Frankfurt am Main, Germany, September 29, 2003

Wie viel Anonymität verträgt unsere Gesellschaft?

Stefan Köpsell, Andreas Pfitzmann

Proceedings of the Security, 2003

Anonym im Netz - eine neue Gefahr?

Stefan Köpsell

Proceedings of the Security, 2003

2002

Anonyme und unbeobachtbare Kommunikation im Internet.

Hannes Federrath, Stefan Köpsell, Heinrich Langos

Proceedings of the 32. Jahrestagung der Gesellschaft für Informatik, Informatik bewegt, INFORMATIK 2002, Dortmund, Germany, September 30, 2002

2001

Efficiency Improvements of the Private Message Service.

Oliver Berthold, Sebastian Clauß, Stefan Köpsell, Andreas Pfitzmann

Proceedings of the Information Hiding, 4th International Workshop, 2001

2000

Web MIXes: A System for Anonymous and Unobservable Internet Access.

Oliver Berthold, Hannes Federrath, Stefan Köpsell

Proceedings of the Designing Privacy Enhancing Technologies, 2000