ISA 62443 IC33 CERTIFICATION EXAM
SCRIPT 2026 QUESTIONS WITH VERIFIED
ANSWERS
⩥ Developing a Plan to Address Unacceptable Risk. Answer: This
involves evaluating existing countermeasures, recommending additional
ones and changes to current policies, prioritizing recommendations
based on relative risk, and assessing the balance between
cost/complexity and effectiveness.
⩥ Benefits of Cyber Risk Assessments. Answer: Helps determine
priority plants/processes, understand threats and vulnerabilities,
intelligently design and apply countermeasures to reduce risk, prioritize
activities and resources, and evaluate countermeasures based on their
effectiveness versus cost/complexity.
⩥ Balancing Security and Cost. Answer: Perfect security is unaffordable.
Thus, risk reduction is balanced against the cost of security measures
intended to mitigate the risk.
⩥ 4.2.3.1 Select a risk assessment methodology. Answer: The
organization shall select a particular risk assessment and analysis
approach and methodology that identifies and prioritizes risks based
upon security threats, vulnerabilities and consequences related to their
IACS assets.
,⩥ 4.2.3.2 Provide risk assessment background
Information. Answer: The organization should provide participants in
the risk assessment activity with appropriate
information including methodology training, before beginning to
identify the risks.
⩥ 4.2.3.3 Conduct a high-level risk assessment. Answer: A high-level
system risk assessment shall be performed to understand the financial
and HS&E consequences in the event that availability, integrity, or
confidentiality of the IACS is compromised.
⩥ 4.2.3.4 Identify the industrial automation and control systems.
Answer: The organization shall identify the various IACS, gather data
about the devices to characterize the nature of the security risk, and
group the devices into logically integrated systems.
⩥ Risk Identification, Classification, and Assessment. Answer: A
systematic process to identify and assess the severity of IACS cyber
risks an organization faces. It involves prioritizing and analyzing
potential threats, vulnerabilities, and consequences. The objective is to
guide cybersecurity investments to lower risk.
⩥ 4.2.3.5 Develop simple network diagrams. Answer: The organization
shall develop simple network diagrams for each of the logically
, integrated systems showing the major devices, network types, and
general locations of the equipment.
⩥ 4.2.3.6 Prioritize systems. Answer: The organization shall develop the
criteria and assign a priority rating for mitigating the risk of each logical
control system.
⩥ 4.2.3.7 Perform a detailed vulnerability assessment. Answer: The
organization shall perform a detailed vulnerability assessment of its
individual logical IACS, which may be scoped based on the high-level
risk assessment results and prioritization of IACS subject to these risks.
⩥ 4.2.3.8 Identify a detailed risk assessment methodology. Answer: The
organization's risk assessment methodology shall include methods for
prioritizing detailed vulnerabilities identified in the detailed vulnerability
assessment.
⩥ 4.2.3.9 Conduct a detailed risk assessment. Answer: The organization
shall conduct a detailed risk assessment incorporating the vulnerabilities
identified in the detailed vulnerability assessment.
⩥ 4.2.3.10 Identify the reassessment frequency and triggering criteria.
Answer: The organization shall identify the risk and vulnerability
reassessment frequency as well as any reassessment triggering criteria
based on technology, organization, or process changes.
SCRIPT 2026 QUESTIONS WITH VERIFIED
ANSWERS
⩥ Developing a Plan to Address Unacceptable Risk. Answer: This
involves evaluating existing countermeasures, recommending additional
ones and changes to current policies, prioritizing recommendations
based on relative risk, and assessing the balance between
cost/complexity and effectiveness.
⩥ Benefits of Cyber Risk Assessments. Answer: Helps determine
priority plants/processes, understand threats and vulnerabilities,
intelligently design and apply countermeasures to reduce risk, prioritize
activities and resources, and evaluate countermeasures based on their
effectiveness versus cost/complexity.
⩥ Balancing Security and Cost. Answer: Perfect security is unaffordable.
Thus, risk reduction is balanced against the cost of security measures
intended to mitigate the risk.
⩥ 4.2.3.1 Select a risk assessment methodology. Answer: The
organization shall select a particular risk assessment and analysis
approach and methodology that identifies and prioritizes risks based
upon security threats, vulnerabilities and consequences related to their
IACS assets.
,⩥ 4.2.3.2 Provide risk assessment background
Information. Answer: The organization should provide participants in
the risk assessment activity with appropriate
information including methodology training, before beginning to
identify the risks.
⩥ 4.2.3.3 Conduct a high-level risk assessment. Answer: A high-level
system risk assessment shall be performed to understand the financial
and HS&E consequences in the event that availability, integrity, or
confidentiality of the IACS is compromised.
⩥ 4.2.3.4 Identify the industrial automation and control systems.
Answer: The organization shall identify the various IACS, gather data
about the devices to characterize the nature of the security risk, and
group the devices into logically integrated systems.
⩥ Risk Identification, Classification, and Assessment. Answer: A
systematic process to identify and assess the severity of IACS cyber
risks an organization faces. It involves prioritizing and analyzing
potential threats, vulnerabilities, and consequences. The objective is to
guide cybersecurity investments to lower risk.
⩥ 4.2.3.5 Develop simple network diagrams. Answer: The organization
shall develop simple network diagrams for each of the logically
, integrated systems showing the major devices, network types, and
general locations of the equipment.
⩥ 4.2.3.6 Prioritize systems. Answer: The organization shall develop the
criteria and assign a priority rating for mitigating the risk of each logical
control system.
⩥ 4.2.3.7 Perform a detailed vulnerability assessment. Answer: The
organization shall perform a detailed vulnerability assessment of its
individual logical IACS, which may be scoped based on the high-level
risk assessment results and prioritization of IACS subject to these risks.
⩥ 4.2.3.8 Identify a detailed risk assessment methodology. Answer: The
organization's risk assessment methodology shall include methods for
prioritizing detailed vulnerabilities identified in the detailed vulnerability
assessment.
⩥ 4.2.3.9 Conduct a detailed risk assessment. Answer: The organization
shall conduct a detailed risk assessment incorporating the vulnerabilities
identified in the detailed vulnerability assessment.
⩥ 4.2.3.10 Identify the reassessment frequency and triggering criteria.
Answer: The organization shall identify the risk and vulnerability
reassessment frequency as well as any reassessment triggering criteria
based on technology, organization, or process changes.
