NSA whistleblowers William Binney and J. Kirk Wiebe will speak at the news conference along with EPA whistleblower Marsha Coleman-Adebayo and journalist Barbara Ehrenreich, a member of the ExposeFacts editorial board.

ExposeFacts "aims to shed light on concealed activities that are relevant to human rights, corporate malfeasance, the environment, civil liberties and war," the group says — and its website will feature a whistleblower submission system known as "SecureDrop."

Binney, a former high-level National Security Agency intelligence official, has been singled out for praise by NSA whistleblower Edward Snowden, who told the Wall Street Journal: "I have tremendous respect for Binney, who did everything he could according to the rules. We all owe him a debt of gratitude for highlighting how the Intelligence Community punishes reporting abuses within the system."