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| Section | Objectives |
|---|---|
| Addressing Risk with Selected Security Counter Measures | - Virtual Private Networks (VPNs) - Firewalls and network security devices - Patch management - Anti-virus and endpoint protection |
| How Cyberattacks Happen | - Vulnerabilities in industrial systems - Cyber threats and attack vectors - Case studies of industrial cyber incidents |
| Understanding the Current Industrial Security Environment | - Current state of industrial control systems security - Security challenges in OT environments - Convergence of IT and OT |
| Risk Analysis | - Risk and vulnerability analysis techniques - Risk management fundamentals - Cybersecurity risk assessment concepts |
| Addressing Risk with Security Policy, Organization, and Awareness | - Security awareness and training - Organizational security roles and responsibilities - Security policies and procedures |
| Validating or Verifying the Security of Systems | - Auditing and compliance - Continuous improvement of security measures - Security validation and verification techniques |
| Creating A Security Program | - Developing a long-term security program - Security management organization - Defining information security policy |
| Monitoring and Improving the CSMS | - Incident detection and response - Continuous monitoring of IACS cybersecurity - Security lifecycle management |
| Addressing Risk with Implementation Measures | - Zones and conduits model - Industrial network architecture and segmentation - Access control principles - Defense-in-depth strategy |
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質問 # 97
What does the System under Consideration (SuC) include in the context of ISA/IEC 62443 risk assessment?
正解：A
解説：
ISA/IEC 62443-3-2 introduces the concept of the System under Consideration (SuC) as the scope boundary for risk assessment.
Step 1: Purpose of the SuC
The SuC defines exactly what is being analyzed for cybersecurity risk.
Step 2: Inclusive scope
It includes a defined collection of IACS components, systems, zones, conduits, and supporting assets that contribute to the system's function.
Step 3: Why definition matters
A clearly defined SuC ensures accurate threat modeling, impact analysis, and Security Level determination.
Step 4: Why other options are incorrect
Limiting the SuC to business assets or physical devices ignores logical, networked, and functional dependencies.
Therefore, the correct answer is a defined collection of IACS and related assets.
質問 # 98
A multinational corporation needs to implement a cybersecurity framework that can be adapted across different countries and industries while allowing continuous improvement. Which feature of the NIST CSF makes it suitable for this purpose?
正解：B
解説：
The NIST Cybersecurity Framework (CSF) is explicitly designed to be flexible, voluntary, and sector- agnostic, making it suitable for diverse environments - including multinational corporations operating in multiple regulatory jurisdictions.
"The Framework is intended to be used by organizations of all sizes, across all sectors and countries. It is technology-neutral and allows for continuous improvement through its tiered implementation and feedback loop."
- NIST Cybersecurity Framework v1.1, Section 1.2 - Framework Overview
This flexibility allows organizations to tailor their implementation to fit their risk appetite, regulatory requirements, and industry practices.
References:
NIST CSF v1.1 - Section 1.2
ISA/IEC 62443-2-1 - Cross-reference in aligning with adaptable frameworks like NIST CSF
質問 # 99
Which service does an Intrusion Detection System (IDS) provide?
正解：C
解説：
An Intrusion Detection System (IDS) is a passive monitoring tool that detects unauthorized or malicious activity in networked systems. It does not block traffic (like an IPS), but rather alerts administrators to potential breaches.
"An IDS monitors network or system activities for malicious actions or policy violations and produces alerts or logs for analysis."
- ISA/IEC 62443-3-3:2013, SR 3.2 - Detection of Security Events
It's a core component of security monitoring and response - often paired with an Incident Response Plan (IRP) as defined in ISA/IEC 62443-2-1.
Clarification of Options:
Option A is metaphorical and not technically accurate.
Option B is false; IDS does not protect against all vulnerabilities.
Option C is incorrect; IDS does not block, only detects.
Option D is correct - it detects unauthorized access or misuse.
References:
ISA/IEC 62443-3-3:2013 - SR 3.2
ISA/IEC 62443-2-1:2010 - SP Element 7: Incident Response
NIST SP 800-94 - Guide to Intrusion Detection Systems
質問 # 100
What are the four main categories for documents in the ISA-62443 (IEC 62443) series?
Available Choices (select all choices that are correct)
正解：A
質問 # 101
Multiuser accounts and shared passwords inherently carry which of the followinq risks?
Available Choices (select all choices that are correct)
正解：A、C
解説：
Multiuser accounts and shared passwords are accounts and passwords that are used by more than one person to access a system or a resource. They inherently carry the risk of unauthorized access, which means that someone who is not authorized or intended to use the account or password can gain access to the system or resource, and potentially compromise its confidentiality, integrity, or availability. For example, if a multiuser account and password are shared among several operators of an industrial automation and control system (IACS), an attacker who obtains the password can use the account to access the IACS and perform malicious actions, such as changing the system settings, deleting data, or disrupting the process. Multiuser accounts and shared passwords also make it difficult to track and audit the activities of individual users, and to enforce the principle of least privilege, which states that users should only have the minimum level of access required to perform their tasks. Therefore, the ISA/IEC 62443 standards recommend avoiding the use of multiuser accounts and shared passwords, and instead using individual accounts and strong passwords for each user, and implementing authentication and authorization mechanisms to control the access to the IACS. References:
* ISA/IEC 62443-3-3:2013 - Security for industrial automation and control systems - Part 3-3: System security requirements and security levels1
* ISA/IEC 62443-2-1:2009 - Security for industrial automation and control systems - Part 2-1:
Establishing an industrial automation and control systems security program2
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Training Course3
Shared passwords and multiuser accounts pose specific risks, notably unauthorized access and privilege escalation. In ISA/IEC 62443's framework, these practices are discouraged because they complicate the attribution of actions to individual users and increase the likelihood that accounts can be used beyond their intended scope. Unauthorized access occurs when individuals exploit the shared nature of an account to gain entry to systems or data that they should not access. Privilege escalation can happen when users leverage shared accounts to perform actions at higher permission levels than those assigned to their personal accounts.
Conversely, buffer overflows and race conditions are types of vulnerabilities or programming errors, not directly associated with the risks of multiuser accounts or shared passwords.
質問 # 102
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