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arXiv · 1703.05953

Das Internet-Adressbuch bedroht unsere Privatsph\"are

Dominik Herrmann
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Abstract

This paper summarizes selected results of the dissertation "Beobachtungsm\"oglichkeiten im Domain Name System: Angriffe auf die Privatsph\"are und Techniken zum Selbstdatenschutz". The dissertation provides new technical insights to answer the questions "Who can monitor us on the Internet?" and "How do we protect ourselves?". It focuses on the Domain Name System (DNS), the address book of the internet. It shows that recursive nameservers have monitoring capabilities that have been neglected so far. In particular, a behavior-based tracking method is introduced, which allows operators to track the activities of users over an extended period of time. On the one hand, this threatens the privacy of Internet users, on the other hand, law enforcement could benefit from this research. Furthermore, new privacy enhancing techniques are proposed, which are more effective and more user-friendly than existing approaches. ----- Dieser Beitrag fasst ausgew\"ahlte Ergebnisse der Dissertation "Beobachtungsm\"oglichkeiten im Domain Name System: Angriffe auf die Privatsph\"are und Techniken zum Selbstdatenschutz" zusammen. Die Dissertation liefert neue Antworten auf die Fragen "Wer kann uns im Internet \"uberwachen?" und "Wie sch\"utzen wir uns davor?". Die Arbeit befasst sich mit dem Domain Name System (DNS), dem Adressbuch des Internets. Es wird gezeigt, dass es im DNS bislang vernachl\"assigte \"Uberwachungsm\"oglichkeiten gibt. Insbesondere wird ein Verfahren zum verhaltensbasierten Tracking vorgestellt, mit dem die Aktivit\"aten von Internetnutzern unbemerkt \"uber l\"angere Zeitr\"aume verfolgt werden k\"onnen. Einerseits wird dadurch die Privatsph\"are vieler Internetnutzer bedroht, andererseits k\"onnten daraus neue Werkzeuge f\"ur die Strafverfolgung entstehen. Weiterhin werden neue Datenschutz-Techniken vorgeschlagen, die sicherer und benutzerfreundlicher sind als die bisherigen Ans\"atze.

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Dominik Herrmann. 2017-03-17. Das Internet-Adressbuch bedroht unsere Privatsph\"are. https://arxiv.org/abs/1703.05953

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