In general, the insider threat drives home the point that perimeter defenses are no longer enough.

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The Minimum Standards provide departments and agencies with the minimum elements necessary to establish effective insider threat programs.

WHITEHOUSE: The White House

The insider threat has traditionally been viewed as a high-consequence but low-frequency risk, and many IT organizations have found it challenging to develop effective programs that manage that risk.

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Plus, they do nothing to address the insider threat.

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The resulting insider threat capabilities will strengthen the protection of classified information across the executive branch and reinforce our defenses against both adversaries and insiders who misuse their access and endanger our national security.

WHITEHOUSE: The White House

His brigade will still face the threat of insider attacks, improvised explosive devices and small arms fire.

BBC: UK troops prepare for Helmand tour

He is what is known as a "guardian angel", protecting his comrades from the increasing threat of insider attacks.

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Rifleman Luke Lawrence will act as one of those guardian angels, but insists that the threat of insider attacks is minimal.

BBC: UK troops prepare for Helmand tour

General Dempsey himself was there in part to talk about some of the measures that we can take to deal with the threat and challenges posed by insider attacks.

WHITEHOUSE: The White House