Kati Karjalainen

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In this paper, we introduce a method and a tool for systematically assessing the security of complex systems. We gather data from interviews, network documentation as well as active and passive network measurements and combine them in a semantic model with our tool, Graphingwiki. We tested our methodology on an active large-scale VoIP system. The(More)
As a service environment, digital television places very high requirements on the usability and information security solutions of services. Digital convergence is introducing more diverse services to the world of digital television. The return channel, which enables interactive television, is key to this development and may be considered the most vulnerable(More)
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