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| Section | Objectives |
|---|---|
| Topic 1: Addressing Risk with Security Policy, Organization, and Awareness | - Organizational security roles and responsibilities - Security awareness and training - Security policies and procedures |
| Topic 2: How Cyberattacks Happen | - Cyber threats and attack vectors - Vulnerabilities in industrial systems - Case studies of industrial cyber incidents |
| Topic 3: Monitoring and Improving the CSMS | - Incident detection and response - Continuous monitoring of IACS cybersecurity - Security lifecycle management |
| Topic 4: Addressing Risk with Implementation Measures | - Defense-in-depth strategy - Zones and conduits model - Access control principles - Industrial network architecture and segmentation |
| Topic 5: Creating A Security Program | - Security management organization - Developing a long-term security program - Defining information security policy |
| Topic 6: Risk Analysis | - Risk management fundamentals - Cybersecurity risk assessment concepts - Risk and vulnerability analysis techniques |
| Topic 7: Addressing Risk with Selected Security Counter Measures | - Virtual Private Networks (VPNs) - Anti-virus and endpoint protection - Firewalls and network security devices - Patch management |
| Topic 8: Validating or Verifying the Security of Systems | - Security validation and verification techniques - Auditing and compliance - Continuous improvement of security measures |
| Topic 9: Understanding the Current Industrial Security Environment | - Security challenges in OT environments - Current state of industrial control systems security - Convergence of IT and OT |
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NEW QUESTION # 59
Which of the following is the BEST reason for periodic audits?
Available Choices (select all choices that are correct)
Answer: A
Explanation:
Periodic audits are an essential part of the ISA/IEC 62443 cybersecurity standards, as they help to verify the effectiveness and compliance of the security program. According to the ISA/IEC 62443-2-1 standard, periodic audits should be conducted to evaluate the following aspects1:
* The security policies and procedures are consistent with the security requirements and objectives of the organization
* The security policies and procedures are implemented and enforced in accordance with the security program
* The security policies and procedures are reviewed and updated regularly to reflect changes in the threat landscape, the IACS environment, and the business needs
* The security performance indicators and metrics are measured and reported to the relevant stakeholders
* The security incidents and vulnerabilities are identified, analyzed, and resolved in a timely manner
* The security awareness and training programs are effective and aligned with the security roles and responsibilities of the personnel
* The security audits and assessments are conducted by qualified and independent auditors
* The security audit and assessment results are documented and communicated to the appropriate parties
* The security audit and assessment findings and recommendations are addressed and implemented in a prioritized and systematic way Periodic audits are not only a means to meet regulations or adhere to a schedule, but also a way to validate that the security policies and procedures are performing as intended and achieving the desired security outcomes. Periodic audits also help to identify gaps and weaknesses in the security program and provide opportunities for improvement and enhancement. References: Periodic audits are an essential part of the ISA/IEC 62443 cybersecurity
* standards, as they help to verify the effectiveness and compliance of the security program. According to the ISA/IEC 62443-2-1 standard, periodic audits should be conducted to evaluate the following aspects1:
* The security policies and procedures are consistent with the security requirements and objectives of the organization
* The security policies and procedures are implemented and enforced in accordance with the security program
* The security policies and procedures are reviewed and updated regularly to reflect changes in the threat landscape, the IACS environment, and the business needs
* The security performance indicators and metrics are measured and reported to the relevant stakeholders
* The security incidents and vulnerabilities are identified, analyzed, and resolved in a timely manner
* The security awareness and training programs are effective and aligned with the security roles and responsibilities of the personnel
* The security audits and assessments are conducted by qualified and independent auditors
* The security audit and assessment results are documented and communicated to the appropriate parties
* The security audit and assessment findings and recommendations are addressed and implemented in a prioritized and systematic way Periodic audits are not only a means to meet regulations or adhere to a schedule, but also a way to validate that the security policies and procedures are performing as intended and achieving the desired security outcomes. Periodic audits also help to identify gaps and weaknesses in the security program and provide opportunities for improvement and enhancement. References:
NEW QUESTION # 60
Which of the following is the underlying protocol for Ethernet/IP?
Available Choices (select all choices that are correct)
Answer: D
NEW QUESTION # 61
The Risk Analysis category contains background information that is used where?
Available Choices (select all choices that are correct)
Answer: B
Explanation:
The Risk Analysis category contains background information that is used to identify and assess the risks associated with the cyber-physical system (CPS) under consideration. This information includes the system description, the threat model, the vulnerability analysis, the risk assessment method, and the risk acceptance criteria. The Risk Analysis category is used as an input for many other elements in the CSMS, such as the Risk ID, Risk Reduction, Risk Acceptance, and Risk Monitoring elements. The Risk Analysis category provides the basis for the risk management process and helps to ensure a consistent and systematic approach to cybersecurity in the CPS. References:
* Using the ISA/IEC 62443 Standards to Secure Your Control System, page 13
* [ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide], page 34
NEW QUESTION # 62
Which steps are part of implementing countermeasures?
Available Choices (select all choices that are correct)
Answer: C
Explanation:
According to the ISA/IEC 62443-3-2 standard, implementing countermeasures is one of the steps in the security risk assessment for system design. The standard defines a comprehensive set of engineering measures to guide organizations through the process of assessing the risk of a particular industrial automation and control system (IACS) and identifying and applying security countermeasures to reduce that risk to tolerable levels. The standard recommends the following steps for implementing countermeasures:
Establish the risk tolerance: This step involves determining the acceptable level of risk for the organization and the system under consideration, based on the business objectives, legal and regulatory requirements, and stakeholder expectations. The risk tolerance can be expressed as a target security level (SL-T) for each zone or conduit in the system.
Select common countermeasures: This step involves selecting the appropriate security countermeasures for each zone or conduit, based on the SL-T and the existing security level (SL-A) of the system. The standard provides a list of common countermeasures for each security level, covering the domains of physical security, network security, system security, and application security. The selected countermeasures should be documented and justified in the security risk assessment report. References: ISA/IEC 62443 Cybersecurity Series Designated as IEC Horizontal Standards, Cybersecurity Risk Assessment According to ISA/IEC 62443-
3-2
NEW QUESTION # 63
Which factor drives the selection of countermeasures?
Available Choices (select all choices that are correct)
Answer: A
Explanation:
The selection of countermeasures is driven by the output from a risk assessment, which identifies the risks and their associated likelihood and consequences for each zone and conduit in the industrial automation and control system (IACS). The risk assessment also determines the target security level (SL-T) for each zone and conduit, which represents the desired level of protection against the identified threats. The countermeasures are then selected based on the SL-T and the existing security level (SL-A) of the zone and conduit, as well as the cost and feasibility of implementation. The countermeasures should aim to reduce the risk to an acceptable level by increasing the SL-A to meet or exceed the SL-T. References: ISA/IEC 62443-3-2:2018 - Security risk assessment for system design, ISA/IEC 62443-3-3:2013 - System security requirements and security levels, ISA/IEC 62443 Cybersecurity Fundamentals Specialist Training Course
NEW QUESTION # 64
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