The flaw that Mr. Kaminsky discovered is in the Domain Name System, a kind of automated phone book that converts human-friendly addresses like google.com into machine-friendly numeric counterparts.
The potential consequences of the flaw are significant. It could allow a criminal to redirect Web traffic secretly, so that a person typing a bank’s actual Web address would be sent to an impostor site set up to steal the user’s name and password. The user might have no clue about the misdirection, and unconfirmed reports in the Web community indicate that attempted attacks are already under way.
From a new york times article, apparently ditching your IP providers DNS service and going with opendns is the way to go.
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