Know Your Enemy: Fast-Flux Service Networks / Honeynet Project, 13 July 2007
PDF - http://www.honeynet.org/papers/ff/fast-flux.pdf
"This paper demonstrates a growing, sophisticated technique called fast-flux service networks which we are seeing increasingly used in the wild. Fast-flux service networks are a network of compromised computer systems with public DNS records that are constantly changing, in some cases every few minutes. These constantly changing architectures make it much more difficult to track down criminal activities and shut down their operations."