Indicates whether Unity's webplayer security model is enabled.
In the web player, this always returns true.
In the Unity Editor, it returns true if web security emulation is enabled (Menu->Edit->Project Settings->Editor) and false if the emulation is disabled.
On all other platforms, this returns false;
This property can only be read. You can use EditorSettings.webSecurityEmulationEnabled to set this setting in the Editor environment.
Note: The web player is not supported from 5.4.0 onwards.