Don't lift a finger: Yontoo has been added to OS X's built-in
protections. by Jacqui Cheng - Mar 22, 2013 9:17 pm UTC. OS X · 0. A day
after Russian anti-virus firm Doctor Web highlighted an adware Mac
trojan called "Yontoo," Apple has moved to block it.
http://arstechnica.com/apple/2013/03/apple-blocks-ad-injecting-mac-trojan-yontoo/