Security vendor Authentium has discovered a mechanism to get around Microsoft's controversial Patchguard kernel protection technology, which is due to ship in the 64-bit version of its forthcoming Windows Vista operating system.

Microsoft has criticised the move, claiming it puts Windows customers at risk, and vows to modify its technology to block the approach. Security firms ought to work with the APIs provided by Redmond rather than going it alone, it said.

The Register UK