Assembly: mscorlib (in mscorlib.dll)
You cannot create an instance of the SecurityAttribute class. You must inherit from this class to make use of its functionality.
This class constructor supports the .NET Framework for Silverlight library code and is not intended to be used by Silverlight application code. The class has been marked as obsolete so that it will display a compilation warning. You can use this class constructor in a Silverlight-based application, but it will have no effect.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.