DD IEC/PAS 62443-3:2008 PDF

1   Scope This PAS establishes a framework for securing information and communication technology aspects of industrial process measurement and control systems including its networks and devices on those networks, during the operational phase of the plant ’s life cycle. This PAS provides guidance on a plant ’s operational security requirements and is primarily intended for automation system owners/operators (responsible for ICS operation) Furthermore, the operational requirements of this PAS may interest ICS stakeholders such as:

a) automation system designers;

b) manufacturers (vendors) of devices, subsystems, and systems;

c) integrators of subsystems and systems.

The PAS allows for the following concerns:

• graceful migration/evolution of existing systems;

• meeting security objectives with existing COTS technologies and products;

• assurance of reliability/ availability of the secured communications services;