Botnet double duty

We know botnets around here as the scourge that dispenses spam. But lets not forget that failure to clean up the messes does more than add to the spam problem. Criminals are still using botnets to redirect URLs, muck up browser home pages, and the like, and they are also using them to direct denial-of-service attacks and extort money out of website operators to “fix” the mess. They are a still growing problem, with few solutions in site.