FBI Director James Comey and National Security Agency Director Mike Rogers testify during the House Permanent Select Committee on Intelligence hearing on Russian actions during the 2016 election campaign. Nicholas Kamm/AFP/Getty Images hide caption

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Nicholas Kamm/AFP/Getty Images

William Evanina, the head of U.S. counterintelligence, estimates that more than 100 Russian spies are currently operating on U.S. soil. Courtesy of the Office of the Director of National Intelligence hide caption

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Courtesy of the Office of the Director of National Intelligence

For America's Top Spy Catcher, A World Of Problems To Fix — And Prevent

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This image released by Open Road Films shows, from left, Melissa Leo as Laura Poitras, Joseph Gordon-Levitt as Edward Snowden, Tom Wilkinson as Ewen MacAskill and Zachary Quinto as Glenn Greenwald, in a scene from "Snowden." Jürgen Olczyk/AP hide caption

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Jürgen Olczyk/AP

A Former NSA Deputy Director Weighs In On 'Snowden'

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U.S. Secretary of Defense Ashton Carter, shown here at the Pentagon in March, has said the "new breed of warrior" — cyberwarriors — will be expected to fight just as hard as their colleagues on conventional battlefields. Saul Loeb/AFP/Getty Images hide caption

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Saul Loeb/AFP/Getty Images

Rules For Cyberwarfare Still Unclear, Even As U.S. Engages In It

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A pedestrian walks by an Apple store in New York City on Feb. 23. Protesters demonstrated against the FBI's efforts to require the company to make it easier to unlock the encrypted iPhone used by Syed Rizwan Farook. Julie Jacobson/AP hide caption

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Julie Jacobson/AP

From Reagan's Cyber Plan To Apple Vs. FBI: 'Everything Is Up For Grabs'

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Former National Security Agency contractor Edward Snowden spoke via video conference at the Johns Hopkins University auditorium in Baltimore Feb. 17. Juliet Linderman /AP hide caption

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Juliet Linderman /AP

NSA: Fallout From Snowden Leaks Isn't Over, But Info Is Getting Old

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Russia's Vladimir Putin makes a speech in 2009 after receiving an award in Dresden, Germany, where he served as a KGB officer during the Cold War. Norbert Millauer/AFP/Getty Images hide caption

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Norbert Millauer/AFP/Getty Images

Spy Vs. Spies: Why Deciphering Putin Is So Hard For U.S. Intelligence

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FBI Director James Comey is one of the federal officials who has said that the growing use of encryption hurts the ability to track criminals. Keith Srakocic/AP hide caption

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Keith Srakocic/AP

A man using a mobile phone walks past an AT&T store, in June. The New York Times and ProPublica report that the telecom giant helped the NSA spy for decades. Mark Lennihan/AP hide caption

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Mark Lennihan/AP

"I try to lead an examined life," says Anne Neuberger, the NSA's chief risk officer. "I try to lead a life where I'm asking myself that question: Have I earned the gift of existence, in some way?" All her grandparents were Holocaust survivors. Courtesy of National Security Agency hide caption

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Courtesy of National Security Agency

At The NSA, A Rising Star's Commitment To Faith — And Public Service

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Under the USA Freedom Act, phone call metadata will remain with private phone carriers but can be subpoenaed by the government. Alex Williamson/Ikon Images/Corbis hide caption

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Alex Williamson/Ikon Images/Corbis

Phone Carriers Tight-Lipped On How They Will Comply With New Surveillance Law

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