Hacker-run DNS nameservers used for pay per click fraud

Hackers are using networks of comprimised machines (zombie machines) to deploy rapidly changing DNS servers.

"Bot networks aggregate computers that have been compromised allowing them to be remotely directed by the attackers, explains Netcraft, adding:

“Botnets are being used for a variety of scams, including spamming, phishing, sniffing network traffic for unencrypted passwords, and click fraud targeting Google's AdSense program.”"

Full Story: Fraudsters deploy Botnets as DNS Servers to Sustain Phishing Attacks