S3 Special: Tracers in the Dark with Andy Greenberg

Do we really need a "war against cryptography" - codes and ciphers that the government can easily crack if it thinks there's an emergency - to cement our collective online security?

Hear renowned cybersecurity author Andy Greenberg's thoughtful commentary on this and many other vital issues, including anonymity and privacy, as we talk to him about his tremendous new book, Tracers in the Dark.

Original music by Edith Mudge.