Accused government whistleblower Edward Snowden is seen on a screen as he speaks via video conference
IN PHOTO: Accused government whistleblower Edward Snowden is seen on a screen as he speaks via video conference with members of the Committee on legal Affairs and Human Rights of the Parliamentary Assembly of the Council of Europe during an hearing on "mass surveillance" at the Council of Europe in Strasbourg, April 8, 2014. Reuters/Vincent Kessler

Edward Snowden has been constantly called as the National Security Agency (NSA) whistleblower, who U.S. officials in a new Reuters report claim has been able to access 1.5 million secret documents. Oliver Stone has called Snowden a "hero," deciding to adapt the man's story for film.

"Snowden is a hero to me," guest speaker director Oliver Stone said during an event at the Japan Foreign Press Club in an Aug 12, 2013 file video Reuters recorded.

"Because he did this not for profit, not to give, exchange, give secrets away that could hurt our country supposedly. I haven't seen one evidence of that," Stone, who is famous for directing films with controversial subjects, continued.

According to the 67-year-old Oscar-winning director, Snowden has done what he has done "out of conscience," even sacrificing his life for doing it.

Snowden's story appears to have greatly appealed to Stone that he reportedly set out to adapt the whistleblower's story into a big budget film, which will be based on the book "The Snowden Files: The Inside Story of the World's Most Wanted Man," written by The Guardian journalist Luke Harding.

Edward Snowden, a former systems administrator for the Central Intelligence Agency (CIA) who later worked as an NSA contractor for Dell, has been the whistleblower who is considered to have leaked the most significant classified materials in the U.S. history.

"I think that the public is owed an explanation of the motivations behind the people who made these disclosures that are outside of the democratic model," Snowden has revealed in a filmed interview with Glenn Greenwald and Laura Poitras of The Guardian in June 2013.

"The public needs to decide whether these programs and policies are right or wrong," Snowden continued to reveal. "And I'm willing to go on the record to defend the authenticity of them and say, I didn't change this. I didn't modify the story. This is the truth, this is what's happening, [and] you should decide whether we need to be doing this."

In another filmed interview filed by Reuters, Snowden has revealed to NBC news anchor Brian Williams that he sees himself as a "patriot" though explaining that being a patriot means knowing when to protect one's "country, constitution and countrymen" against the violations of the opposition.