According to the FBI, on Monday July 9th over 300,000 computers will no longer be able to access the internet due to a malware infection known as “DNS Changer Trojan”. The internet outage for these computers is due to the FBI shutting down the ring of cyber-criminals responsible for creating the Trojan late last year

Over the past five years, a group of six Estonian cybercriminals infected about 4 million computers around the world with DNSChanger. Themalware redirected infected users’ Web searches to spoofed sites with malicious advertisements.

News Sources:  1, 2
More info on the DNS Changer Trojan here