NetworkWorld: New method finds botnets that hide behind changing domains
“Domain-fluxing bots generate random domain names; a bot queries a series of domain names, but the domain owner registers just one. As an example, the research points to Conficker-A, which generated 250 domains every three hours. In order to make it harder for a security vendor to pre-register the domain names, the next version, Conficker-C, increased the number of randomly generated domain names per bot to 50,000.”
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