Worse to come warn virus experts as Sobig writer hones malware skills… Sobig.C is already spreading rapidly around the world, and experts are warning that it may be succeeded in a few days by yet another upgrade. A variant of the Sobig worm appeared over the weekend and is now spreading rapidly. This is the third Sobig variant to hit the internet this year, and security experts believe more variants may already be in the pipeline. Security analysts said the new version, W32/Sobig.C-mm, had already reached a “high level” outbreak status by mid-afternoon on Monday. Because of the increasing spread of the virus, McAfee has upgraded its risk assessment of Sobig.C to medium. The worm’s main impact is to mass-mail itself to email addresses found in address books on the system, but such worms, when successful, can use large amounts of bandwidth. These can also be difficult to root out, because they spread via desktop PCs with minimal security. Full Story
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