Our article earlier this week about the frequency of DNS exploits has already come back in the news, in the wake of shutting down one of the the longest running and most costly botnets in history by the FBI earlier this week. The network, called Esthost, supposedly claimed an estimated four to five million victims and fleeced them somewhere around $14 million. All of that was due to 100 rogue DNS servers that were used to redirect massive amounts of traffic from the infected computers. The operation, dubbed Ghost Click by the FBI, raided two data centers in New York and Chicago, along with arresting people in Tartu, Estonia.