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Error 404--Not Found

Error 404--Not Found

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.5 404 Not Found

The server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent.

If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address.

NetworkWorld.com > Security >

Storm worm, other botnets, kept spam levels high in 2007

Spam accounted for an average of 80% of all e-mail traffic in 2007, Commtouch reports

By Brad Reed, Network World, 01/09/08

Botnets helped keep spam output at consistently high levels last year, and global spam reached rates as high as 96% of all e-mail traffic during 2007, according to a report from Commtouch.

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According to data collected by Commtouch, a security firm that specializes in protecting e-mail, the global spam rate averaged around 80% of all e-mail traffic throughout the year (compare antispam products).  

Although the spam rate dipped to as low as 60% in the second quarter of 2007, it spiked back up in the third and fourth quarters, peaking at 96% of all e-mail output early in the fourth quarter. Commtouch says that botnets -- which are networks of infected zombie hosts that are used to carry out distributed denial-of-service attacks and massive spam campaigns -- were the major culprits behind the spam outbreaks.

The most disruptive botnet, says the firm, was the Storm worm botnet, which researchers estimate contains more than 1 million infected machines. In the fourth quarter of 2007, for instance, the Storm botnet launched an MP3 spam campaign that enticed unwitting users into downloading malware by offering them free music through infected sound files. The firm says that this particular attack accounted for 7% to 10% of all global spam traffic at its peak.

In addition to its MP3 attacks, the Storm botnet launched a series of holiday-themed spam attacks that included dancing skeleton graphics for Halloween and Christmas e-mails that enticed users with promises of "sexy girls" who would "give you that special Santa treatment."

Commtouch warns that the Storm botnet has yet to be used to its full potential and that its activity in 2007 "may come to be seen as merely the calm before the Storm compared to what 2008 has yet to bring." Part of the reason that the Storm botnet has been so difficult for security pros to tackle, the firm notes, is that it has an elaborate defense system that aggressively attacks anyone who attempts to reverse engineer it. Additionally, Commtouch says it is virtually impossible to track down Storm's botmaster, because its command and control is executed through a peer-to-peer network.

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