IM security: virus throttling in scale-free networks

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Scientists have been studying the spread of biological disease for over a hundred years. The aim is to predict and thus avoid damaging epidemics, thus the name “epidemiology.” In recent years, some researchers have started applying the tools of epidemiology to help understand another form of common disease: computer viruses and worms.

One thing that sets computer 'diseases' apart from their biological counterparts is that worms and viruses mostly spread on networks. When epidemiologists talk about networks, they don't mean Ethernet or TCP/IP, they mean the network of 'contacts' that each machine has. For computers this ...

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