The federal government has concluded there's a new leaker exposing national security documents in the aftermath of surveillance disclosures by former NSA contractor Edward Snowden, U.S. officials tell CNN. Proof of the newest leak comes from national security documents that formed the basis of a news story published [August 5] by the Intercept, the news site launched by Glenn Greenwald, who also published Snowden's leaks. The Intercept article focuses on the growth in U.S. government databases of known or suspected terrorist names during the Obama administration. The article cites documents prepared by the National Counterterrorism Center dated August 2013, which is after Snowden left the United States to avoid criminal charges. Government officials have been investigating to find out that identity. In a February interview with CNN's Reliable Sources, Greenwald said: I definitely think it's fair to say that there are people who have been inspired by Edward Snowden's courage and by the great good and virtue that it has achieved." The biggest database, called the Terrorist Identities Datamart Environment, now has 1 million names, a U.S. official confirmed to CNN. The Intercept first reported the new TIDE database numbers, along with details of other databases. As of November, 2013, there were 700,000 people listed in the Terrorist Screening Database (TSDB), or the "Terrorist Watchlist, according to a U.S. official. The Intercept report said, citing the documents, that 40% on the "Terrorist Watchlist" aren't affiliated with terror groups.