The NSA and other Western spy agencies are now snooping into online gaming.
The Guardian obtained the 2008 memo (now declassified), acknowledging that it was using Xbox 360 consoles and other forms of Internet communication (Yahoo!, Skype, etc) to search for possible terrorist cells.
No such possible evidence arose from this yet, but one has to wonder the way of thinking of the author of this memo. The author says that shooting games such as the government-sponsored U.S. Army and Hezbollah-backed Special Forces 2 offer "realistic weapons training" even though it is mostly through keyboard and mouse that you can play these games on.
The only thing that seems to be a possibility is terrorists using Xbox 360 controllers to navigate drones since the U.S. Military is doing it, but again, no such evidence has arisen yet.
While it is understandable that such possibilities exist, if the U.S. government cannot provide definitive proof that terrorists are using Xbox Live, then they will face a very suspicious public, like what some tech giants are doing already.