2. Definitions and basic concepts

2.1 Systems studied

• Information system

  An information system (IS) is an organized set of physical, software, organizational or human resources used to acquire, process and store information (in the form of data, text, images, sound, etc.) within and between organizations.

• Industrial Information System or ICS (Industrial Control System)

  An Industrial Information System (IIS) or Industrial Control System (ICS) is a system comprising a conventional information system plus specific control and measurement equipment, enabling interaction with the physical world. This definition includes SCADA (Supervisory control and data acquisition), SIS (Safety Instrumented Systems) and DCS...