Sobig tops the viral chart

In a month plagued by super viruses, the Sobig virus eclipsed Blaster in the August viral charts, with more than a third of support calls (37.6%) logged by AV firm Sophos in August involving Sobig.

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By  Paul Barthram Published  September 1, 2003

In a month plagued by so-called super viruses the Sobig virus eclipsed Blaster in the August viral charts.

More than a third of support calls (37.6%) logged by AV firm Sophos in August involved Sobig, twice as many (18.8 per cent) as those received for the prolific Blaster worm.

Managed services firm MessageLabs has so far blocked more than 12.8 million Sobig-infected emails, since the appearance of Sobig-F on August 18th.

At the peak of infection, one in seventeen emails MessageLabs scanned harboured the virus. IntY, which provides malicious code screening services for SMEs, estimated that at least one in three emails in a sample of UK small businesses contained the virus at the peak of the outbreak.

August 2003 is now reported to be the worst month ever recorded for malicious code, according to Sophos, with four of the top ten viral entries in the firm's chart arriving for the first time this month.

In Sophos’s virus chart for August 2003, Sobig-F came in at number one, followed by Blaster-A at number two, in at three was Nachi-A, while sitting at the bottom of the top ten was Sobig’s last worse hit Sobig-A.

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