Mail and Microsoft 's Hotmail and Live Mail has doubled, according to a report to be published in December by e-mail security firm MessageLabs.

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Virus-monitoring company MessageLabs said it had detected and stopped 155, 528 e-mail viruses by the end of November - a rate of one every three minutes.

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Many people in Australia look like they have been caught out by the virus as many of the copies of Bagle caught by MessageLabs have originated there.

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And MessageLabs reports that another large botnet called Cutwail, unaffected by the McColo shutdown, has increased its efforts in response to the "spam vacuum" of recent weeks.

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MessageLabs scanned about 134 million e-mails in May.

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MessageLabs, the email-filtering company that Symantec acquired in 2008, posted a set of word maps today measuring the frequency of terms in spam emails from a random one-week sampling of junk mail pulled from the most prolific spam-spewing botnets.

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