Increased spam levels connected with aggressive botnet activities

MessageLabs announced the results of its MessageLabs Intelligence Report for October 2006. In this report, MessageLabs highlights the sudden increase in spam levels as spammers gear up to the holiday season, attributed to a huge rise in recent botnet activities and the latest outbreak of the Warezov virus, responsible for dropping an aggressive spam Trojan.

A spam-sending Trojan dubbed "SpamThru" is responsible for a vast amount of the recent botnet activity which has significantly increased spam levels to almost three out of every four emails. The developers of SpamThru exploited numerous tactics to eliminate detection and enhance outreach such as releasing new strains of the Trojan at regular intervals in order to confuse traditional anti-virus signatures detection. Furthermore, SpamThru employed the "spam cannon" technique and by utilizing a template for each spam it sent out and combining it with a list of email addresses, each zombie was able to pump out millions of spam emai...

» Help Net Security Croatia - 07-11-2006

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