An anonymous reader writes from a NetworkWorld article: NSA whistleblower Edward Snowden spoke at Free Software Foundation's LibrePlanet 2016 on free software, privacy, and security. He credited free software for his ability to help disclose the U.S. government's far-reaching surveillance projects. "What happened in 2013 couldn't have happened without free software," he said, particularly citing projects like Tor, Tails (a highly secure Linux distribution) and Debian. "I didn't use Microsoft machines when I was in my operational phase, because I couldn't trust them," Snowden stated. "Not because I knew that there was a particular back door or anything like that, but because I couldn't be sure."