Who Is Affected by DNS Malware?

Initially, there were more than 4 million infected computers in 100 countries, including 500,000 in the United States, according to the indictment.

As of July 4, there were only about 46,000 in the United States, FBI spokeswoman Jenny Shearer told ABCNews.com today. (That's out of nearly 300,000 worldwide.)

PCs and Apple Macs have been infected. Routers and iPads were hit, too.

As of June, the United States had more infected computers than any other country, according to data from the DNS Changer Working Group, or DCWG, a group working on cleanup resulting from the malware.