<A target="_blank" href="http://www.zdnet.com/blog/security/is-your-ip-address-on-the-shady-rat-server/9237">McAfee has created a tool called Shady Rat Checket to let you check your IP addresses</A> against those found on the Shady Rat server. If your IP address is verified as "infected" it indicates your network has been compromised.