The ISA/IEC 62443 standard provides a structured approach to industrial cybersecurity. The assess phase focuses on understanding the cybersecurity posture and identifying risks, including:
Allocation of IACS (Industrial Automation and Control System) assets to zones and conduits: This step involves segmenting systems to limit risk exposure, improving containment, and facilitating security controls.
Detailed cyber risk assessment: This includes identifying vulnerabilities, evaluating threats, and analyzing risks for each zone and conduit to determine their impact and likelihood.
Answer is D
As per 62443 cybersecurity lifecycle consists of three phases:
Assess Phase
The first phase of the cybersecurity lifecycle is the assessment or analysis phase. In this phase, the IACS (Industrial automation & control system) is identified, segmented into zones, and analyzed for risk. The requirements for the design are then defined. The objective of the assessment phase is to identify any shortcomings in the current cybersecurity of the facility.
Answer is D
Assess phase:
- high-level cyber risk assessment,
- allocation of IACS assets to security zones or conduits
- detailed cyber risk assessments
This is wrong. Review IACS Cybersecurity Lifecycle documentation. Right answer is D, because Cybersecurity Requirements Specification is in Develop & Implement Phase
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