President Barack Obama’s unprecedented initiative, known as the Insider Threat Program, is sweeping in its reach. It has received scant public attention even though it extends beyond the U.S. national security bureaucracies to most federal departments and agencies nationwide, including the Peace Corps, the Social Security Administration and the Education and Agriculture departments. It emphasizes leaks of classified material, but catchall definitions of “insider threat” give agencies latitude to pursue and penalize a range of other conduct...

Government documents reviewed by McClatchy illustrate how some agencies are using that latitude to pursue unauthorized disclosures of any information, not just classified material. They also show how millions of federal employees and contractors must watch for “high-risk persons or behaviors” among co-workers and could face penalties, including criminal charges, for failing to report them. Leaks to the media are equated with espionage.

The program could make it easier for the government to stifle the flow of unclassified and potentially vital information to the public, while creating toxic work environments poisoned by unfounded suspicions and spurious investigations of loyal Americans, according to these current and former officials and experts. Some non-intelligence agencies already are urging employees to watch their co-workers for “indicators” that include stress, divorce and financial problems.

Obama in November approved “minimum standards” giving departments and agencies considerable leeway in developing their insider threat programs, leading to a potential hodgepodge of interpretations. He instructed them to not only root out leakers but people who might be prone to “violent acts against the government or the nation” and “potential espionage.”

The Pentagon established its own sweeping definition of an insider threat as an employee with a clearance who “wittingly or unwittingly” harms “national security interests” through “unauthorized disclosure, data modification, espionage, terrorism, or kinetic actions resulting in loss or degradation of resources or capabilities.”

“An argument can be made that the rape of military personnel represents an insider threat. Nobody has a model of what this insider threat stuff is supposed to look like,” said the senior Pentagon official, explaining that inside the Defense Department “there are a lot of chiefs with their own agendas but no leadership.”