Security researcher Chris Kubecka knew that it might be a tough assignment to catch an intruder on the email system at Saudi Arabia's embassy in the Netherlands. But the story only got bigger once she got to work.

Hal Martin was responsible for one of the largest leaks of U.S government secrets, after it was found that the former NSA contractor possessed up to 50 terabytes of classified government documents.

The staggering leak was one of several damaging disclosures of NSA secrets in recent years.

A government task force aims to help agencies move beyond the "minimum standards" for an insider threat program with a new "Maturity Framework."

Preempt says it anticipates and stops both malicious insiders and unwittingly compromised users from exposing data by monitoring their privileges and behavior on the network.

For one count of espionage, Winner faces 63 months in prison and three years of supervised release.