Computerworld - June 29, 2011 by Gregg Keizer
A new and improved botnet that has infected more than four million PCs is "practically indestructible," security researchers say.
"TDL-4," the name for both the bot Trojan that infects machines and the ensuing collection of compromised computers, is "the most sophisticated threat today," said Kaspersky Labs researcher Sergey Golovanov in a detailed analysis Monday.
"[TDL-4] is practically indestructible," Golovanov said.
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