Insider threat management

Insider threat management is the process of preventing, combating, detecting, and monitoring employees, remote vendors and contractors, to fortify an organization's data from insider threats such as theft, fraud and damage.
Background.
An insider is an individual who is employed by an agency and has access to facilities, sensitive information, organizational data, information systems, and other equipment. They may have accounts giving them legitimate access to computer systems, with this access originally having been given to them to serve in the performance of their duties; these permissions could be abused to harm the organization. Insiders are often familiar with the organization's data and intellectual property as well as the methods that are in place to protect them. This makes it easier for the insider to circumvent any security controls of which they are aware. Physical proximity to data means that the insider does not need to hack into the organizational network through the outer perimeter by traversing firewalls; rather they are in the building already, often with direct access to the organization's internal network. Insider threats are harder to defend against than attacks from outsiders since the insider already has legitimate access to the organization's information and assets.
Insiders may comprise permanent and temporary employees, vendors, contractors, suppliers, or ex-employees. Most common insiders are those that have elevated access where they can utilize sensitive information without drawing suspicion. However, anyone can be an insider threat to an organization if they do not dispose, secure, utilize sensitive information described in an agency's regulations. There have been cases where individuals are compromised by an opposing agency and exploited by the individual's financial status, threats on their life, or other factors in order to force the individual to comply with the opposing agencies demands.
Criminal activity.
An insider may attempt to steal property or information for personal gain, or to benefit another organization or country. These attacks may range from information data being stolen to the destruction of business property. Insiders may perform the following threats against their organization:
Common insider identifiers.
Insiders have similar characteristics that can be compiled to in order to help determine possible threats. Most researchers have identified that insiders mainly show antisocial behavior that may include but not limited to: Machiavellianism, narcissism, and psychopathy.
On the information system side, there is the list of common behavioral indicators of known insiders:
Examples of insider threats.
The impacts from insider threat incidents can be very severe, costly and damaging. Not all incidents by insiders are malicious. Non-Malicious insider incidents can be just as damaging as malicious incidents.
Listed on the link below are numerous insider threat incidents that have had severe impacts on organizations.