An even simpler explanation is that this story itself was planted by US counterintelligence as part of a plan to discredit Wikileaks.org by using it to publish details of US counterintelligence plans that do not exist.

User analysis, task analysis, and usability testing.

Free MIT course materials and lectures online:
http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/index.htm