http://blogs.msdn.com/doronh/archive/2007/10/16/setting-a-security-descriptor-on-a-legacy-device-object.aspxSetting the security descriptor allows you to control who can open a handle to the device object. Typically you can call IoCreateDeviceSecure to create the device object and have the correct DACL from the start. One issue with IoCreateDeviceSecure isenCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/doronh/archive/2007/10/16/setting-a-security-descriptor-on-a-legacy-device-object.aspx#5477962Wed, 17 Oct 2007 02:56:07 GMT91d46819-8472-40ad-a661-2c78acb4018c:5477962Techy News Blog » Setting a security descriptor on a legacy device object<p>PingBack from <a rel="nofollow" target="_new" href="http://www.artofbam.com/wordpress/?p=9403">http://www.artofbam.com/wordpress/?p=9403</a></p>