Serious question: How do we know PRISM is real? The only source I could find is The Guardian and the PPT of the so called PRISM project.

Some facts:

  * The Guardian is the only source.
  * We don't know how they verified the authenticity of the PPT.
  * We don't know anything about Edward Snowden.
  * All companies 'involved' never heard of PRISM and also don't know how the NSA does gather user information without a warrant.