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Conficker worm gets an upgrade
Conficker worm gets an upgrade
The Conficker worm, which infected millions of PCs last month, has received an upgrade which makes it much more effective.
The new variant, dubbed Conficker B++, has been redesigned to get around attempts to shut it down.
Previous versions checked for software updates from a list of 250 randomly generated URLs. But security companies managed to reverse engineer the algorithm that generated the URLs and design a way to block the software from updating. The new variant now uses a new set of backdoors to update itself.
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