WASHINGTON — In an initiative aimed at rooting out future leakers and other security violators, President Barack Obama has ordered federal employees to report suspicious actions of their colleagues based on behavioral profiling techniques that are not scientifically proven to work, according to experts and government documents.

The techniques are a key pillar of the Insider Threat Program, an unprecedented government-wide crackdown under which millions of federal bureaucrats and contractors must watch out for ‘high-risk persons or behaviors