Jacob Appelbaum is a staff research scientist at the University of Washington, and a developer and advocate for the Tor Project, which is an online anonymity system for everyday people to fight against surveillance and against internet censorship.
Andy Mller-Maguhn is a long time member of, and former spokesman for, the Chaos Computer Club in Germany. A specialist on surveillance he runs a company called Cryptophone, which markets secure voice communication devices to commercial clients.
Jrmie Zimmermann is the co-founder and spokesperson for the citizen advocacy group La Quadrature du Net, the most prominent European organization defending anonymity rights online and promoting awareness of regulatory attacks on online freedoms.