Snowden featured TED conference via telepresence robot . Snowden had argued that surveillance invaded privacy without benefit and that technology companies must encrypt private data ( Google announced Thursday that it was increasing the security of Gmail in response to the NSA revelations ) . An TED deputy director appeared on video to counter Edward Snowden . Much of conference focused on the startling gains and ethical issues of technology . Ballroom dancer who lost leg in Russia bombing danced again .
Snowden featured TED conference via telepresence robot . An TED deputy director appeared on video to counter Edward Snowden . Much of conference focused on the startling gains and ethical issues of technology . Ballroom dancer who lost leg in Russia bombing danced again .