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Microsoft Security Tool Leaves Holes
But confusion has risen with patch management in WU because Microsoft has at least four mechanisms for installing patches, each with its own vagaries and nuances. The complexity has led to technical glitches and patch mismanagement.
In one extreme case, a Microsoft customer said a patch he installed via WU removed without warning several previous hot fixes he had installed. As a result, one of his systems was successfully attacked by the Nimda virus, for which he once had a patch. "It got Nimda again because the roll-up uninstalled the previous patches," said John McGuire, a staff engineer and security expert at Strictly Business Computer Systems Inc., a consulting and engineering company in Huntington, W.Va.
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