FIGHT THE FUTURE !
Purity, more commonly referred to as black oil, and called "the black cancer" by the Russians, was an alien virus that thrived in petroleum deposits underground on Earth. The virus was capable of entering humanoids and assuming control of their bodies. It was sentient and was capable of communicating. It is the "life force" of the alien colonists, which they seemingly use to reproduce their kind, as well as infect other alien races in order to conquer the universe.
Faked OR Real is the Question
Coast To Coast AM, April 12 2013, Black Eyed Children