...at its peak on July 9, equivalent to more than nine billionspam messages per day worldwide. With many social networking...a botnet responsible for sending approximately five billionspam messages every day, is one of the main culprits for...
http://www.securitypark.co.uk/security_article263520.html
... Paul Wood, an analyst with MessageLabs, said: 'Donbot, the botnet responsible for sending approximately five billionspam messages every day, is one of the main culprits for using this technique. 'Links of any size all need to be treated...
http://www.bcs.org/server.php?show=conWebDoc.27412