Biblio

Filters: Author is Schmidt, Thomas C.  [Clear All Filters]
2020-01-13
Frey, Michael, Gündoğan, Cenk, Kietzmann, Peter, Lenders, Martine, Petersen, Hauke, Schmidt, Thomas C., Juraschek, Felix, Wählisch, Matthias.  2019.  Security for the Industrial IoT: The Case for Information-Centric Networking. 2019 IEEE 5th World Forum on Internet of Things (WF-IoT). :424–429.

Industrial production plants traditionally include sensors for monitoring or documenting processes, and actuators for enabling corrective actions in cases of misconfigurations, failures, or dangerous events. With the advent of the IoT, embedded controllers link these `things' to local networks that often are of low power wireless kind, and are interconnected via gateways to some cloud from the global Internet. Inter-networked sensors and actuators in the industrial IoT form a critical subsystem while frequently operating under harsh conditions. It is currently under debate how to approach inter-networking of critical industrial components in a safe and secure manner.In this paper, we analyze the potentials of ICN for providing a secure and robust networking solution for constrained controllers in industrial safety systems. We showcase hazardous gas sensing in widespread industrial environments, such as refineries, and compare with IP-based approaches such as CoAP and MQTT. Our findings indicate that the content-centric security model, as well as enhanced DoS resistance are important arguments for deploying Information Centric Networking in a safety-critical industrial IoT. Evaluation of the crypto efforts on the RIOT operating system for content security reveal its feasibility for common deployment scenarios.

2019-12-18
2019-11-26
Scheitle, Quirin, Gasser, Oliver, Nolte, Theodor, Amann, Johanna, Brent, Lexi, Carle, Georg, Holz, Ralph, Schmidt, Thomas C., Wählisch, Matthias.  2018.  The Rise of Certificate Transparency and Its Implications on the Internet Ecosystem. Proceedings of the Internet Measurement Conference 2018. :343-349.

In this paper, we analyze the evolution of Certificate Transparency (CT) over time and explore the implications of exposing certificate DNS names from the perspective of security and privacy. We find that certificates in CT logs have seen exponential growth. Website support for CT has also constantly increased, with now 33% of established connections supporting CT. With the increasing deployment of CT, there are also concerns of information leakage due to all certificates being visible in CT logs. To understand this threat, we introduce a CT honeypot and show that data from CT logs is being used to identify targets for scanning campaigns only minutes after certificate issuance. We present and evaluate a methodology to learn and validate new subdomains from the vast number of domains extracted from CT logged certificates.

2018-04-11
Meyer, Philipp, Hiesgen, Raphael, Schmidt, Thomas C., Nawrocki, Marcin, Wählisch, Matthias.  2017.  Towards Distributed Threat Intelligence in Real-Time. Proceedings of the SIGCOMM Posters and Demos. :76–78.

In this demo, we address the problem of detecting anomalies on the Internet backbone in near real-time. Many of today's incidents may only become visible from inspecting multiple data sources and by considering multiple vantage points simultaneously. We present a setup based on the distributed forensic platform VAST that was extended to import various data streams from passive measurements and incident reporting at multiple locations, and perform an effective correlation analysis shortly after the data becomes exposed to our queries.

2017-08-18
Perrey, Heiner, Landsmann, Martin, Ugus, Osman, Wählisch, Matthias, Schmidt, Thomas C..  2016.  TRAIL: Topology Authentication in RPL. Proceedings of the 2016 International Conference on Embedded Wireless Systems and Networks. :59–64.

The IPv6 Routing Protocol for Low-Power and Lossy Networks was recently introduced as the new routing standard for the Internet of Things. Although RPL defines basic security modes, it remains vulnerable to topological attacks which facilitate blackholing, interception, and resource exhaustion. We are concerned with analyzing the corresponding threats and protecting future RPL deployments from such attacks. Our contributions are twofold. First, we analyze the state of the art, in particular the protective scheme VeRA and present two new rank order attacks as well as extensions to mitigate them. Second, we derive and evaluate TRAIL, a generic scheme for topology authentication in RPL. TRAIL solely relies on the basic assumptions of RPL that (1) the root node serves as a trust anchor and (2) each node interconnects to the root in a straight hierarchy. Using proper reachability tests, TRAIL scalably and reliably identifies any topological attacker without strong cryptographic efforts.