Arrests made in "Mariposa" botnet that infected 13 million PCs

AP reports that authorities in Spain have cracked one of the biggest botnet rings in history, with three arrests made and more coming. The so-called Mariposa botnet appeared in December, 2008: "a data vacuum that stole credit cards and online banking credentials from as many as 12.7 million poisoned PCs," affecting "half of the Fortune 1,000 companies" and more than 40 major banks, according to investigators.