External links without noopener/noreferrer are a potential security risk.

examples/misc_sound_visualizer.html

@@ -70,7 +70,7 @@
 
 	<div id="container"></div>
 	<div id="info">
-		<a href="https://threejs.org" target="_blank">three.js</a> - misc - sound visualizer -
+		<a href="https://threejs.org" target="_blank" rel="noopener noreferrer">three.js</a> - misc - sound visualizer -
 		music by <a href="http://www.newgrounds.com/audio/listen/358232" target="_blank">larrylarrybb</a>
 	</div>