Plans to favor some Internet packets over others threaten consumers' hard-won right to use encryption, a digital privacy advocate says. Activists and tech companies fended off efforts in the U.S. in the 1990s to ban Internet encryption or give the government ways around it, but an even bigger battle over cryptography is brewing now, according to Sascha Meinrath, director of X-Lab, a digital civil-rights think tank launched earlier this year. One of the most contested issues in that battle will be net neutrality, Meinrath said.