"What we need to do is think of ourselves as active participants in the conversation." — Beth Noveck James Duncan Davidson/TED hide caption

itoggle caption James Duncan Davidson/TED

"By me putting all this information out there, what I'm basically telling you is I'm telling you everything." — Hasan Elahi James Duncan Davidson/TED hide caption

itoggle caption James Duncan Davidson/TED

Travelers at Pearson International Airport in Toronto earlier this month. At an unnamed airport, Canada's spy agency tested a program that allowed them to track those who took advantage of free Wi-Fi. Aaron Harris /Reuters/Landov hide caption

itoggle caption Aaron Harris /Reuters/Landov

In 1984, an American Army unit engaged in this firefight as it shielded a Soviet defector who made a break across the Demilitarized Zone between North Korea and South Korea. Thirty years after the battle, one of the U.S. soldiers, Mark Deville, has finally received a Silver Star for his bravery. Courtesy of Mark Deville hide caption

itoggle caption Courtesy of Mark Deville

Daniel Pearl and Asra Nomani in Karachi in 2001 Courtesy Asra Nomani hide caption

itoggle caption Courtesy Asra Nomani

President Barack Obama delivers his State of the Union speech before a joint session of Congress February 12, 2013, in Washington, D.C. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

Surveillance camera video of Aaron Alexis, a contractor who killed 12 people at the Washington Navy Yard on Sept. 16, 2013. Alexis was one of thousands of individuals cleared by the firm known as USIS. HO/UPI/Landov hide caption

itoggle caption HO/UPI/Landov