The man is suspected of being the mastermind behind the GameOver Zeus botnet, which was used by cybercriminals to steal more than $100 million.
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 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 botnet has targeted at least 202 Web sites that serve 14 billion ad impressions. The botnet apparently accounted for 9 billion of them.
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.
Suspected Russian hacker is accused of creating botnet that infected as many as 1 million computers worldwide in order to steal more than $100 million.
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.
A report that Internet-connected refrigerators are part of massive botnet struggles to stand up to scrutiny.