Microsoft has released a security advisory to announce that an update is available for the Kernel Patch Protection feature that is included with x64-based Windows operating systems. Kernel Patch Protection protects code and critical structures in the Windows kernel from modification by unknown code or data. This update adds checks to this protection for increased resiliency in Windows.

Kernel Patch, or PatchGuard, is a specific technology 64 – bit versions of Windows platforms and client-server side, and was created to prevent any third party intervention in the core operating system. PatchGuard is first and foremost security to mitigate against rootkits.

A supported hotfix is available from Microsoft. However, this hotfix is only intended to correct the problem, which is described in this article. Apply the adjustment only to systems that are experiencing this specific problem. This hotfix may conduct additional tests. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

detailed information can be check on http://support.microsoft.com/kb/932596/

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