From Star Wars: Episode III - Revenge of the Sith
[addressing the Separatist leaders
] It won't be long before the armies of the Republic track us here. I am sending all of you to the Mustafar system in the Outer Rim. It is a volcanic planet which generates a great deal of scanning interference. You will be safe there.
Safe? Hmph. Chancellor Palpatine managed to escape, General. Without Count Dooku, I have doubts about your ability to keep us safe.