By using vulnerable computers as "relay agents", the company says, spammers are able to send messages which appear to originate from Blueyonder computers. Many others have been threatened, though they are generally quick to address the spam posting...
Symantec said in an advisory: "The impact of this vulnerability is exaggerated by the fact that many email and other traffic routing gateways make use of file-scanning utilities that make use of the vulnerable library.
Computer security experts have identified zombie networks, or networks of systems with bot software installed, as a rising threat to consumers and businesses. Personal computers that play unwitting host to "zombie" code are proliferating at a...
Lyn Maddock, acting chairperson of the Acma, said the majority of spam is distributed by zombie computers, which have become a "major problem". Adam Biviano, senior systems engineer at antivirus firm Trend Micro said he is pleased the government...
Jeanson James Ancheta, 21, from California, rented out space on this zombie network of compromised machines for the sending of spam and malware, and also for launching denial of service attacks. Ancheta advertised his zombie network - or botnet...
But as the threat has evolved, so have the filtering techniques that help ensure spam never reaches the user, as Anthony Plewes reports. Attempts by governments and police to stop spam at its source have proved futile.
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