Ahead of the release of his new memoir, Edward Snowden discusses the iAhead of the release of his new memoir, Edward Snowden discusses the incredible lengths he goes to in order to guard against his own privacy and explains how your cell phone is tracking you. He joins MSNBC's Brian Williams as part of an exclusive interview.ncredible lengths he goes to to guard against his own privacy and explains how your cell phone is tracking you. He joins MSNBC's Brian Williams as part of an exclusive interview.