The Guardian recently published a "Slide from secret PowerPoint presentation describes how (National Security Agency's) program (PRISM) collects data 'directly from the servers' of tech firms" such as Facebook, Google, Apple, Microsoft and other internet giants.
The Guardian also metioned that NSA has direct access to metadata,photos, files, chat, and even VoIP and video calls.
However these major companies denied that they even know this program.
Which one do you believe; TheGuardian or the companies??