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| Section | Objectives |
|---|---|
| Industrial Network and System Security | - Asset identification and protection - Network segmentation and architecture security |
| Introduction to Industrial Cybersecurity | - Overview of IT vs OT security concepts - Fundamentals of cybersecurity in industrial environments |
| Risk and Security Management | - Risk assessment principles - Security lifecycle management in industrial systems |
| Policies, Procedures, and Governance | - Compliance and governance considerations - Security policies for industrial control systems |
| ISA/IEC 62443 Framework Overview | - Key terminology and concepts (zones, conduits, security levels) - Structure and purpose of IEC 62443 standards |
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質問 # 103
Using the risk matrix below, what is the risk of a medium likelihood event with high consequence?
正解：D
質問 # 104
Which of the following is a cause for the increase in attacks on IACS?
Available Choices (select all choices that are correct)
正解：D
質問 # 105
Which is a common pitfall when initiating a CSMS program?
Available Choices (select all choices that are correct)
正解：D
解説：
"A common pitfall is to attempt to initiate a CSMS program without at least a high-level rationale that relates cyber security to the specific organization and its mission." A CSMS program is a Cybersecurity Management System program that follows the IEC 62443 standards for securing industrial control systems (ICS)1. A common pitfall when initiating a CSMS program is D.
Immediate jump into detailed risk assessment. This is because a detailed risk assessment requires a clear definition of the system under consideration (SuC), the allocation of IACS assets to zones and conduits, and the identification of threats, vulnerabilities, and consequences for each zone and conduit2. These steps are part of the assess phase of the CSMS program, which is the first phase of the security program development process2. However, before starting the assess phase, it is important to have the management team's support to ensure the CSMS program will have sufficient financial and organizational resources to implement necessary actions2. Therefore, jumping into detailed risk assessment without having the management buy-in is a common mistake that can jeopardize the success of the CSMS program.
質問 # 106
Which is a PRIMARY reason why network security is important in IACS environments?
Available Choices (select all choices that are correct)
正解：C
解説：
Network security is important in IACS environments because PLCs, or programmable logic controllers, are devices that control physical processes and equipment in industrial settings. PLCs under cyber attack can have costly and dangerous impacts, such as disrupting production, damaging equipment, compromising safety, and harming the environment. Therefore, network security is essential to protect PLCs and other IACS components from unauthorized access, modification, or disruption. The other choices are not primary reasons why network security is important in IACS environments. PLCs are not inherently unreliable, but they can be affected by environmental factors, such as temperature, humidity, and electromagnetic interference. PLCs are programmed using ladder logic, which is a graphical programming language that resembles electrical schematics. PLCs use serial or Ethernet communications methods, depending on the type and age of the device, to communicate with other IACS components, such as human-machine interfaces (HMIs), supervisory control and data acquisition (SCADA) systems, and distributed control systems (DCSs). References:
ISA/IEC 62443 Standards to Secure Your Industrial Control System training course1 ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide2 Using the ISA/IEC 62443 Standard to Secure Your Control Systems3
質問 # 107
If an asset owner wants to demonstrate compliance with ISA/IEC 62443-2-1 requirements during an external audit, which type of evidence would be MOST appropriate?
正解：C
解説：
To demonstrate compliance with ISA/IEC 62443-2-1, the most effective evidence is formal documentation that shows the actual use, configuration, and operation of required cybersecurity policies and controls.
"The asset owner shall document procedures, configuration settings, and evidence of operational security controls to support compliance assessments and audits."
- ISA/IEC 62443-2-1:2010, Clause 4.3.1 - Documented Security Program
Auditors require verifiable, written proof - not informal reports or promotional material.
References:
ISA/IEC 62443-2-1:2010 - Clause 4.3.1
ISA/IEC 62443-2-4 - Supporting audit evidence for service providers
質問 # 108
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