yahoo pipesからのデータがsecurity sandbox 侵害になる件

/**
 * Copyright sinketu ( http://wonderfl.net/user/sinketu )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/pj0H
 */

package {
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.display.Loader;
	import flash.net.URLRequest;
	import flash.net.URLLoader;
	import flash.text.TextField;
	import flash.text.TextFieldAutoSize;
    public class FlashTest extends Sprite {
        private var myLoader:URLLoader = new URLLoader();
		public var myArray:Array = new Array();
		public function FlashTest() {
            // yahoo pipesのテスト1
            //security sandbox 侵害になるのがなぜかわかった。 
            myLoader.addEventListener (Event.COMPLETE,COMPLETE);
           //yahoo pipesが吐き出すアドレスの"http://pipes.yahoo.com/"を"http://pipes.yahooapis.com/"にかえなきゃなんない。
           //myLoader.load(new URLRequest("http://pipes.yahoo.com/pipes/pipe.run?_id=febf0c71127b8a1538ebe52fb5b30878&_render=json&_rand="+Math.random()));
           myLoader.load(new URLRequest("http://pipes.yahooapis.com/pipes/pipe.run?_id=755b773d73a8faef78c9dd5a6dfff220&_render=rss&_rand="+Math.random()));
        }
        private function COMPLETE(e:Event = null):void 
		{
			var myXML:XML = new XML(myLoader.data);
			
			for each (var prop:XML in myXML.channel[0].item.title) {
				myArray.push(prop);
			}
			myArray.reverse();
			var myTextField:TextField=new TextField();
			myTextField.width=450;
			myTextField.autoSize=TextFieldAutoSize.LEFT;
			myTextField.wordWrap=true;
			addChild(myTextField);
			myTextField.text=myArray.toString();
		}
    }
}