Definition(s)
Insiders
Insiders are defined as those individuals who normally have authorized access to the asset. They may pose a particularly difficult threat because of their training, knowledge of the facilities, the possibility for deceit or deception, and their unsupervised access to critical information and assets.
Source:API STANDARD 780, Security Risk Assessment Methodology for the Petroleum and Petrochemical Industries, First Edition, May 2013. Global Standards