Definition(s)
Insider
Trusted person, employee, contractor, or supplier who has information that is not generally known to the public.
Source: DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
Insider
“trusted” person, employee, contractor, or supplier who has information that is not generally known to the public (See “outsider”).
Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard