Wired Security Spoken Edition

In old spy novels, when two secret agents need to communicate with each other out in the field, one of them often leaves a document in an assigned place—tucked in the hollow of a tree trunk or between the pages of a certain library book. Once the first agent has safely vacated the scene, the second one moves in to fetch it. This maneuver—called a dead drop—may seem straight­forward. Learn about your ad choices: dovetail.prx.org/ad-choices