ANDREW LEHREN

Since last weekend's prisoner exchange in which Afghan insurgents turned over Sgt. Bowe Bergdahl after five years of captivity, a number of the men who served with him have called him a deserter. Some have gone further, blaming him for the deaths of six to eight soldiers.

When a smartphone user opens Angry Birds, the popular game application, and starts slinging birds at chortling green pigs, spy agencies have plotted how to lurk in the background to snatch data revealing the player's location, age, sex and other personal information, according to secret British intelligence documents.