NSA leaker Edward Snowden addressed a packed auditorium at South by Southwest on Monday, speaking via livestream from Russia. In response to questions from ACLU program director Ben Wizner, Snowden called on internet service developers to thwart the NSA by making strong encryption ubiquitous. “They’re setting fire to the future of the internet,” Snowden told the audience. “The people who are in this room now, you’re all the firefighters. and we need you to help us fix this.” In conjunction with Wizner’s co-presenter Christopher Soghoian, Snowden called for end-to-end encryption that would keep the NSA from snooping on data simply by tapping into servers or internet backbone cables. The goal, they insisted, wasn’t to “blind the NSA” but to make bulk collection unfeasible.