Botnet spam campaigns can be long lasting: evidence, implications, and analysis.

Abhinav Pathak Feng Qian Y. Charlie Hu Zhuoqing Morley Mao Supranamaya Ranjan Botnet spam campaigns can be long lasting: evidence, implications, and analysis. 13-24 2009 SIGMETRICS/Performance http://doi.acm.org/10.1145/1555349.1555352 conf/sigmetrics/2009 db/conf/sigmetrics/sigmetrics2009.html#PathakQHMR09