Paul Vixie (the guy who wrote the BIND DNS server) talks about his efforts to clean up the effects of the DNS Changer malware, which changes the DNS settings on the host computer (and sometimes the routers they use). DNS Changer was, in essence, a black hat advertising network. If you paid them, they would alter the malware victims’ DNS searches to redirect them to sites that promoted your products.
After the DNS Changer network was taken down, Vixie’s job was to come in and stand up replacement DNS servers to take the place of the bogus ones, so that victims of the malware didn’t suddenly lose the ability to perform DNS lookups. In the meantime, the working group is trying to remove the malware from hundreds of thousands of devices before the new DNS servers are taken down by court order on June 9.
Interesting look at a tough problem.