hey0you0guy writes, "The large security firms such as Symantec and McAfee want Microsoft to allow them to replace Microsoft's Windows Security Center. Microsoft is refusing these requests. 'By imposing the Windows Security Center on all Windows users, Microsoft is defining a template through which everybody looks at security,' Bruce McCorkendale, a chief engineer at Symantec, said in an interview. 'How do we trust that Microsoft knows what all the important things about security are to warn users about?' Given Microsoft's past, with vast piles of security flaws and patches, they should at least cooperate with these companies. A dispute still exists over PatchGuard, a security feature that Microsoft says is designed to guard core parts of the 64-bit version of Vista, but which critics say locks out helpful software from security rivals."