ISA/IEC 62443 - Cybersecurity Fundamentals Specialist: ISA-IEC-62443

Correct Answer: A

One of the primary goals of providing a framework addressing secure product development life-cycle requirements is to ensure that the development process of industrial automation and control systems (IACS) products is aligned with the security objectives and requirements of the ISA/IEC 62443 series of standards. The framework defines a secure development life-cycle (SDL) that covers all the phases of product development, from security requirements definition, to secure design, implementation, verification, validation, defect management, patch management, and product end-of-life. The framework also provides guidance on how to document and demonstrate compliance with the SDL requirements, as well as how to assess the security performance of the products using security levels. By following the framework, product suppliers can improve the security of their products and reduce the risk of vulnerabilities and exploits that may compromise the safety, integrity, reliability, and security of IACS. References: ISA/IEC 62443-4-1:2018, Security for industrial automation and control systems - Part 4-1: Product security development life-cycle requirements1 ISA/IEC 62443-4-2:2019, Security for industrial automation and control systems - Part 4-2: Technical security requirements for IACS components2

Correct Answer: D

According to the ISA/IEC 62443 standard, the connections between security zones are called conduits. A conduit is defined as a logical or physical grouping of communication channels connecting two or more zones that share common security requirements. A conduit can be used to control and monitor the data flow between zones, and to apply security measures such as encryption, authentication, filtering, or logging. A conduit can also be used to isolate zones from each other in case of a security breach or incident. A conduit can be implemented using various technologies, such as firewalls, routers, switches, cables, or wireless links. However, these technologies are not synonymous with conduits, as they are only components of a conduit. A firewall, for example, can be used to create multiple conduits between different zones, or to protect a single zone from external threats. Therefore, the other options (firewalls, tunnels, and pathways) are not correct names for the connections between security zones. References: ISA/IEC 62443-3-2:2016 - Security for industrial automation and control systems - Part 3-2: Security risk assessment and system design1 ISA/IEC 62443-3-3:2013 - Security for industrial automation and control systems - Part 3-3: System security requirements and security levels2 Zones and Conduits | Tofino Industrial Security Solution3 Key Concepts of ISA/IEC 62443: Zones and Security Levels | Dragos4

Correct Answer: A

Safety management staff are stakeholders of the CSMS, which stands for Cybersecurity Management System. The CSMS is a framework for managing the cybersecurity of industrial automation and control systems (IACS) based on the ISA/ IEC 62443-2-1 standard1. The CSMS defines the objectives, policies, metrics, and governance for the overall ICS security program2. The CSMS also includes the processes for risk assessment, security design, implementation, monitoring, and improvement3. Safety managementstaff are involved in the CSMS development and implementation, as they are responsible for ensuring the safety of the IACS and the people, environment, and assets that depend on it. Safety management staff need to coordinate with the security management staff to align the safety and security requirements, identify and mitigate the safety risks arising from cyber threats, and monitor and respond to safety incidents caused by cyberattacks. References:

1: ISA/IEC 62443-2-1: Establishing an Industrial Automation and Control Systems Security Program, ISA, 2010.

2: A Practical Approach to Adopting the IEC 62443 Standards - ISAGCA

3: ISA ISA-IEC-62443 ISA/IEC 62443 Cybersecurity Fundamentals Specialist Online Training - Exam4Training [4]: Using the ISA/IEC 62443 Standards to Secure Your Control System, ISA, 2018.