Olivier van der Toorn

University of Twente | UT · Centre for Telematics and Information Technology (CTIT)

Given the importance of privacy, many Internet protocols are nowadays designed with privacy in mind (e.g., using TLS for confidentiality). Foreseeing all privacy issues at the time of protocol design, however, is challenging and may become near impossible when interaction out of protocol bounds occurs. One demonstrably not well understood interacti...

The Internet exposes us to cyberthreats attacking information, services, and the Internet infrastructure itself. Such attacks are typically detected in a reactive fashion. The downside of this approach is that alerts of an attack are issued as it is happening. In this article, we advocate that the security community could benefit by complementing t...

The Domain Name System contains a wealth of information about the security, stability and health of the Internet. Most research that leverages the DNS for detection of malicious activities does so by using passive measurements. The limitation of this approach, however, is that it is effective only once an attack is ongoing. In this paper, we explor...