Warezov the scourge of message traffic

Proliferation of the latest variant of the Warezov e-mail worm, Warezov.nf, reached epidemic levels last week, security firm Kaspersky warned.

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By  Administrator Published  April 26, 2007

Proliferation of the latest variant of the Warezov e-mail worm, Warezov.nf, reached epidemic levels last week, security firm Kaspersky warned.

At its peak, the worm accounted for 75 to 80% of all malicious code in mail traffic, Kaspersky said.

The company stated the volume of Warezov.nf peaked on April 19 when at one point approximately one message in ten contained a malicious program.

Kaspersky's security lab released an urgent update to its anti-virus databases the same day, containing detection and disinfection routines for the worm, and reported the volume of contaminated messages had subsided by that evening.

The lab warned all its users to keep their anti-virus protection up to date, and not open e-mails from unknown senders.

The Warezov variant spreads via the internet as an attachment to infected messages. The attachment does not contain the worm itself, but rather is a component that downloads other malicious programs from the internet.

The damage caused by the worm includes sending infected messages to all e-mail addresses found on the victim's machine, and disabling and deleting anti-virus solutions.

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