In the first documented attack of its kind, the Internet of Things has been used as part of an attack that sent out over 750,000 spam emails.
The botnet has targeted at least 202 Web sites that serve 14 billion ad impressions. The botnet apparently accounted for 9 billion of them.
The security firm is confronting the ZeroAccess botnet, which is likely to have more than 1.9 million slave computers at its disposal for click fraud and bitcoin mining.
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.
More than 120,000 Windows-based computers running Internet Explorer 9 are infected in the U.S., researchers say.
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.
With 631 active command and control servers, the U.S. far surpasses any other country when it comes to malware-controlled zombie computers, says the antivirus vendor.
FBI credits the social-networking giant with helping take down the suspects behind one of the largest cybercrime hauls in history.
New variant dubbed "Eurograbber" intercepts bank text messages sent to mobile phones to defeat two-factor authentication process.
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.