When the author was faced with implementing support for changing a security descriptor on an object, he noticed there was not support for that operation in .NET. So he devised two solutions to the problem: the first, simpler one, is tailored to the .NET Framework 1.1 and can be used today. The second solution incorporates several advanced features available only in the .NET Framework 2.0. Both are presented here.
MSDN Magazine March 2005
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