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"Insider Threats" by Matthew Bunn and Scott D. Sagan

Reality Winner, the former federal contractor, is scheduled to go on trial in October; she’s accused of leaking classified information to a media outlet.

This follows other, similar cases, including those of Edward Snowden and Chelsea Manning.

Scott Sagan writes about these inside threats. He’s a political science professor at Stanford, and co-author and co-editor of the book "Insider Threats."