Indicates whether Unity's webplayer security model is enabled.
In the web player, this will always return true.
In the Unity editor, it will return true if web security emulation is enabled (Menu->Edit->Project Settings->Editor) and false if the emulation is disabled.
On all other platforms, this will return false;
This property can only be read. You can use EditorSettings.webSecurityEmulationEnabled to set this setting in the editor environment.