@inproceedings{NeubauerFischerHackenberg, author = {Neubauer, Katrin and Fischer, Sebastian and Hackenberg, Rudolf}, title = {Work in Progress: Security Analysis for Safety-critical Systems}, series = {ARCS Workshop 2019; 32nd International Conference on Architecture of Computing Systems, May 2019, Copenhagen, Denmark, Workshop FORMUS³IC}, booktitle = {ARCS Workshop 2019; 32nd International Conference on Architecture of Computing Systems, May 2019, Copenhagen, Denmark, Workshop FORMUS³IC}, editor = {Trinitis, Carsten and Pionteck, Thilo}, publisher = {VDE Verlag GmbH}, address = {Berlin}, isbn = {978-3-8007-4957-7}, pages = {101 -- 106}, abstract = {Internet of Thing (IoT) and Smart Grid (SG) are separate technologies. The digital transformation of the energy industry and the increasing digitalization in the private sector connect these technologies. Currently in Germany, the SG is under construction. In order to use future innovative services, SG and IoT must be combined. For this, we connect the SG Infrastructure with the IoT. A potential insecure device and network (IoT) should be able to transfer data to and from a critical infrastructure (SG). Open research question in this context are the security requirements architecture SG and IoT and the mechanism for authentication and authorisation in future application (SG and IoT). Due to the increasing networking of the systems (SG and IoT) new threats and attack vectors arise. The attacks to the architecture influence the target of authenticity, security and privacy. For the security analysis we focus on two communication points: the communication between the smart meter gateway, and the IoT device. In our example, a connected charging station with cloud services is connected with a SG infrastructure. To create a really smart service, the charging station needs a connection to the SG to get the current amount of renewable energy in the grid. With this two connections, new threats emerge. A security analysis over all the connections, including the vulnerability and the ability of an attacker, is developed in this paper. The analysis shows us challenges of the communication between IoT and SG. For this, we defined technical and organizational requirements for authentication and authorization. Current authentication and authorization mechanisms are no longer sufficient for the defined requirements. We present the Role-based trust model for Safety-critical Systems for these defined requirements. The new trust model is integrated into a role-based access control model. It defines data classes, which separate the sensitive and non-sensitive information.}, language = {en} } @article{WeberChristenHerrmann, author = {Weber, Karsten and Christen, Markus and Herrmann, Dominik}, title = {Bedrohung, Verwundbarkeit, Werte und Schaden : Cyberattacken und Cybersicherheit als Thema der Technikfolgenabsch{\"a}tzung}, series = {TATuP - Journal for Technology Assessment in Theory and Practice}, volume = {29}, journal = {TATuP - Journal for Technology Assessment in Theory and Practice}, number = {1}, publisher = {oekom-verlag}, issn = {2567-8833}, doi = {10.14512/tatup.29.1.10}, pages = {10 -- 43}, abstract = {The annual monetary costs incurred worldwide by cyberattacks are growing steadily and are on a scale comparable to the budgets of entire countries. Cyberattacks affect individuals, businesses, public institutions, authorities, and governments; they affect an infrastructure without which modern societies can hardly function. But ensuring cybersecurity can lead to conflicts of interest. Technologies used to ensure the security and resilience of this infrastructure should therefore be a subject of technology assessment.}, language = {de} } @article{D’AnnaWeberHaug, author = {D'Anna, Lesley and Weber, Karsten and Haug, Sonja}, title = {Wissenstransfer zur Reproduktionsmedizin}, series = {Pr{\"a}vention und Gesundheitsf{\"o}rderung}, volume = {13}, journal = {Pr{\"a}vention und Gesundheitsf{\"o}rderung}, number = {1}, publisher = {Springer Nature}, doi = {10.1007/s11553-017-0597-y}, pages = {1 -- 6}, abstract = {Hintergrund Das Internet im Allgemeinen und digitale soziale Netzwerke im Speziellen entwickeln sich zunehmend zu wichtigen Informationsquellen f{\"u}r Gesundheitsinformationen; dies gilt auch f{\"u}r Informationen im Kontext der Behandlung von Kinderwunschpatienten. Erste Studien zeigen, dass die Betroffenen nicht nur nach sachlichen Informationen, sondern auch nach emotionalem Beistand suchen. Ob insbesondere digitale soziale Netzwerke in Erg{\"a}nzung oder in Konkurrenz zu klassischen Informations- und Beratungsangeboten stehen, ist noch unklar. Methode Um eine vorl{\"a}ufige Antwort hierauf geben zu k{\"o}nnen, wurde eine Literaturstudie erstellt, mit der die wichtigsten empirischen Aussagen bzgl. der Nutzungsweisen von Internet und digitalen sozialen Netzwerken eruiert werden sollten. Dies wurde mithilfe einer Keyword-Suche in Literaturdatenbanken und anschließendem Schlagwort-Snowballing umgesetzt. Ergebnisse Informationen und Beratung aus dem Internet und aus digitalen sozialen Netzwerken k{\"o}nnen als Erg{\"a}nzung der {\"a}rztlichen Expertise angesehen werden, stellen aber keinen Ersatz dar. Insbesondere digitale soziale Netzwerke erg{\"a}nzen soziale Nahbeziehungen und das Verh{\"a}ltnis zum behandelnden Arzt und werden in Zukunft noch an Wichtigkeit zunehmen. Schlussfolgerung F{\"u}r die professionell T{\"a}tigen im Bereich der Reproduktionsmedizin k{\"o}nnte dies ein Hinweis auf Defizite in Bezug auf Beratung und Behandlung sein, dem in Zukunft durch eigene neue Angebote begegnet werden sollte.}, language = {de} } @article{D’AnnaWeberHaug, author = {D'Anna, Lesley and Weber, Karsten and Haug, Sonja}, title = {Knowledge transfer on reproductive medicine. The role of the Internet and digital social networks - a research overview}, series = {Pr{\"a}vention und Gesundheitsf{\"o}rderung}, volume = {13}, journal = {Pr{\"a}vention und Gesundheitsf{\"o}rderung}, number = {1}, publisher = {Springer}, doi = {10.1007/s11553-017-0597-y}, pages = {1 -- 6}, abstract = {Background. The Internet in general and digital social networks in particular are increasingly important sources for health information; this also applies to information in the context of treatment of patients wishing for a baby. Initial studies show that patients are not only looking for factual information but also for emotional support. Whether digital social networks add to or compete with classical information and consulting is still unclear. Methods. In order to provide a preliminary answer to this question, a literature study was conducted to determine relevant empirical findings regarding the use of the Internet and digital social networks. This was done using a keyword search in literature databases and then keyword snowballing. Results. Information and advice from the Internet and from digital social networks can be seen as an addition to medical expertise, but are not a substitute. Digital social networks, in particular, supplement social peer groups and the relationship with physicians and will become even more important in the future. Conclusion. For professionals active in the field of reproductive medicine, this could be an indication of deficits with regard to counseling and treatment, which in the future might be countered by providing new services.}, language = {de} } @inproceedings{RueckertRiederFeussneretal., author = {Rueckert, Tobias and Rieder, Maximilian and Feussner, Hubertus and Wilhelm, Dirk and Rueckert, Daniel and Palm, Christoph}, title = {Smoke Classification in Laparoscopic Cholecystectomy Videos Incorporating Spatio-temporal Information}, series = {Bildverarbeitung f{\"u}r die Medizin 2024: Proceedings, German Workshop on Medical Image Computing, March 10-12, 2024, Erlangen}, booktitle = {Bildverarbeitung f{\"u}r die Medizin 2024: Proceedings, German Workshop on Medical Image Computing, March 10-12, 2024, Erlangen}, editor = {Maier, Andreas and Deserno, Thomas M. and Handels, Heinz and Maier-Hein, Klaus and Palm, Christoph and Tolxdorff, Thomas}, publisher = {Springeer}, address = {Wiesbaden}, doi = {10.1007/978-3-658-44037-4_78}, pages = {298 -- 303}, abstract = {Heavy smoke development represents an important challenge for operating physicians during laparoscopic procedures and can potentially affect the success of an intervention due to reduced visibility and orientation. Reliable and accurate recognition of smoke is therefore a prerequisite for the use of downstream systems such as automated smoke evacuation systems. Current approaches distinguish between non-smoked and smoked frames but often ignore the temporal context inherent in endoscopic video data. In this work, we therefore present a method that utilizes the pixel-wise displacement from randomly sampled images to the preceding frames determined using the optical flow algorithm by providing the transformed magnitude of the displacement as an additional input to the network. Further, we incorporate the temporal context at evaluation time by applying an exponential moving average on the estimated class probabilities of the model output to obtain more stable and robust results over time. We evaluate our method on two convolutional-based and one state-of-the-art transformer architecture and show improvements in the classification results over a baseline approach, regardless of the network used.}, language = {en} }