Stop suspicious widgets

Change-Id: Ie82a211a3774609ecf8612a85f0b8dd7457f231e
diff --git a/dev/js/src/plugin/widget.js b/dev/js/src/plugin/widget.js
index 4c2f09c..cb4a33d 100644
--- a/dev/js/src/plugin/widget.js
+++ b/dev/js/src/plugin/widget.js
@@ -49,6 +49,12 @@
     // Resize iframe
     resize : function (data) {
       this._element.style.height = data.height + 'px';
+    },
+
+    // Shutdown suspicious iframe
+    shutdown : function () {
+      KorAP.log(0, 'Suspicious action from ' + this.src);
+      this._element.parentNode.removeChild(this._element);
     }
   }
 });