How does Wikileaks procure its information?

Wikileaks idea is to obtain and disseminate classified information to the public, it was founded in 2006 by Julian Assange. Wikileaks gets most of it's information from anonymous people or leakers whose identity are conceal. It acts as an intermediate source for classified information collection.

The same way US uses CIA to source for information and also intelligence gathering about anything, is actually what wikileaks is intended to do. Wikileaks has always described itself an open intelligence agency where classified information and secrets can be submitted anonymously and thereafter release them to the public. Wikileaks doesn't attend to information that has already been published, which means you can only submit those ones that have not been reported by other news outlets.