Article Title: The Government’s Secret Wiki for Intelligence
Snippet of Article: "...Intellipedia, has been around for more than a decade. It’s made up of three different wikis, at different classification levels: one wiki for sensitive but unclassified information, another for secret information, and a third for top secret information. Each wiki can only be accessed by employees in the U.S. intelligence community’s 17 agencies who have the appropriate clearance level..."
Source: www.theatlantic.com
MORE READING: How you can (legally) read Intellipedia 'How to access the “Wikipedia for US intelligence agencies”'