Well, if you’re reading this yours is not one of the hundreds of thousands of computers infected with an aggressive virus called DNSChanger. The spread of this virus led the Federal Bureau of Investigation (FBI) to shut down several servers to head the virus off at the pass. Turning off those servers knocked all of the computers still infected with the virus offline.
“Source: NEW YORK (CNNMoney) — Over the past five years, a group of six Estonian cybercriminals infected about 4 million computers around the world with DNSChanger. The malware redirected infected users’ Web searches to spoofed sites with malicious advertisements.
In November 2011, the FBI and some overseas partners arrested those responsible, commandeered their servers, and attempted to warn those affected to get rid of the virus.”