The software giant teams with the FBI and financial services industry groups to slow down a cybercrime ring that is allegedly responsible for roughly $500 million in losses.
Symantec and Microsoft join forces to stop a botnet, and for the first time they provide clean-up tools directly to people with infected computers.
Google and Lookout see no evidence that Android devices are spewing spam as claimed.
week in review Trojan strikes Mac users, while Facebook strikes back at Yahoo with a patent suit of its own. Also: Yahoo layoffs.
New variants resurrect the malware four months after Microsoft and Kaspersky Lab took down the original, which was capable of sending nearly 4 billion spam e-mails each day.
The software giant and Andrey N. Sabelnikov, who admits he wrote the code used in malware that infected thousands of computers, reach a settlement in related lawsuit.
The botnet has targeted at least 202 Web sites that serve 14 billion ad impressions. The botnet apparently accounted for 9 billion of them.
More than 120,000 Windows-based computers running Internet Explorer 9 are infected in the U.S., researchers say.
The software giant reached an agreement with the owner of 3322.org, a site that has been linked to malware such as the Nitol botnet.