London, Jul 28: While the United States is trying to hunt for the individual behind the massive leak of US military data on Afghanistan war, the whistleblowers' website, that made the 91,000 classified documents available to the world, has said that the source of leak is unknown.
WikiLeaks' chief Julian Assange told reporters that the source of the leaked military documents were unknown and stressed that one of the cornerstones of his website is the fact that the source of its data is hidden from those who receive it.
The layer of secrecy helps protect the site's sources from spy agencies and hostile corporations, the Australian hacker said.
He, however, acknowledged that the site's anonymous submissions have raised concerns about the authenticity of the material.
Assange claimed that WikiLeaks has not yet encountered any such bogus material.