An interesting piece in Japan News in defense of Snowden and, by implication, Bradley Manning, Julian Assange, and others. I wonder if Snowden ever read about Kim Philby and how much he enjoyed life in the worker's paradise after fleeing England? It's a cold, lonely life.
Speaking of insider threats, you might want to take a look at Managing the Insider Threat: No Dark Corners. It identifies new management, security, and workplace strategies for categorizing and defeating insider threats.