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| Section | Objectives |
|---|---|
| Risk and Security Management | - Risk assessment principles - Security lifecycle management in industrial systems |
| ISA/IEC 62443 Framework Overview | - Key terminology and concepts (zones, conduits, security levels) - Structure and purpose of IEC 62443 standards |
| Policies, Procedures, and Governance | - Security policies for industrial control systems - Compliance and governance considerations |
| Introduction to Industrial Cybersecurity | - Fundamentals of cybersecurity in industrial environments - Overview of IT vs OT security concepts |
| Industrial Network and System Security | - Network segmentation and architecture security - Asset identification and protection |
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NEW QUESTION # 24
In a defense-in-depth strategy, what is the purpose of role-based access control?
Available Choices (select all choices that are correct)
Answer: B
NEW QUESTION # 25
Why is patch management more difficult for IACS than for business systems?
Available Choices (select all choices that are correct)
Answer: B
Explanation:
Patch management is the process of applying software updates to fix security vulnerabilities, improve functionality, or enhance performance. Patch management is an essential part of cybersecurity, as unpatched systems can be exploited by malicious actors. However, patch management for industrial automation and control systems (IACS) is more challenging than for business systems, because patching a live automation system can create safety risks. According to the ISA/IEC 62443 standards, patching an IACS may have the following potential impacts1:
* Patching may introduce new vulnerabilities or errors that compromise the availability, integrity, or confidentiality of the IACS.
* Patching may affect the functionality or performance of the IACS, causing unexpected or undesired behavior, such as process shutdowns, slowdowns, or failures.
* Patching may require downtime or reduced operation of the IACS, which may affect production, quality, or profitability.
* Patching may require additional resources, such as personnel, equipment, or testing facilities, which may not be readily available or affordable.
Therefore, patch management for IACS requires careful planning, testing, and validation before applying patches to the operational environment. The ISA/IEC 62443 standards provide guidance and best practices for patch management in the IACS environment, such as1:
* Establishing a patch management program that defines roles, responsibilities, policies, and procedures
* for patching IACS components and systems.
* Identifying and prioritizing the IACS assets that need patching, based on their criticality, vulnerability, and risk level.
* Evaluating and verifying the patches for compatibility, functionality, and security before applying them to the IACS.
* Implementing and documenting the patching process, including backup, recovery, and rollback procedures, in case of patch failure or adverse effects.
* Monitoring and auditing the patching activities and outcomes, and reporting any issues or incidents.
References: 1: ISA TR62443-2-3 - Security for industrial automation and control systems, Part 2-3: Patch management in the IACS environment
NEW QUESTION # 26
Which of the following refers to internal rules that govern how an organization protects critical system resources?
Available Choices (select all choices that are correct)
Answer: C
Explanation:
A security policy refers to internal rules that govern how an organization protects critical system resources, such as industrial control systems (ICS). A security policy defines the objectives, scope, roles, responsibilities, and requirements for securing the ICS environment, as well as the procedures and guidelines for implementing, monitoring, and enforcing the security measures. A security policy also establishes the baseline for assessing and managing the security risks to the ICS, and for ensuring compliance with relevant standards, regulations, and best practices. A security policy is a key component of the ICS security program, and it should be documented, communicated, and reviewed regularly.
The other choices are not correct because:
* A. Formal guidance. Formal guidance refers to external sources of information and recommendations that can help an organization improve its ICS security posture, such as standards, frameworks, guidelines, and best practices. Formal guidance is not an internal rule, but rather a reference that can be used to develop, implement, and evaluate the security policy and controls. For example, the ISA/IEC
62443 series of standards provide formal guidance on how to secure ICS from cyber threats1.
* B. Legislation. Legislation refers to external laws and regulations that impose legal obligations and penalties on an organization for its ICS security performance, such as the NERC CIP standards for the electric sector2, or the EU NIS Directive for critical infrastructure operators3. Legislation is not an internal rule, but rather a compliance requirement that must be met by the organization. Legislation may also influence the security policy and controls, as the organization needs to align its security objectives and practices with the legal expectations and consequences.
* D. Code of conduct. A code of conduct refers to a set of ethical principles and values that guide the
* behavior and decision-making of an organization and its employees, such as honesty, integrity, respect, and accountability. A code of conduct is not an internal rule for protecting critical system resources, but rather a general norm for conducting business and maintaining a positive reputation. A code of conduct may also support the security policy and culture, as it can foster a sense of responsibility and trust among the ICS stakeholders.
References:
* 1: ISA/IEC 62443 Standards to Secure Your Industrial Control System
* 2: NERC Critical Infrastructure Protection Standards
* 3: EU Network and Information Systems Directive
NEW QUESTION # 27
Which of the following is an activity that should trigger a review of the CSMS?
Available Choices (select all choices that are correct)
Answer: A,B,D
Explanation:
According to the ISA/IEC 62443-2-1 standard, a review of the CSMS should be triggered by any changes that affect the cybersecurity risk of the industrial automation and control system (IACS), such as new technical controls, organizational restructuring, or security incidents1. Budgeting is not a trigger for CSMS review, unless it impacts the cybersecurity risk level or the CSMS itself2. References: 1: ISA/IEC 62443-2-1:2010, Section 4.3.3.3 2: A Practical Approach to Adopting the IEC 62443 Standards, ISAGCA Blog3
NEW QUESTION # 28
Which is one of the PRIMARY goals of providing a framework addressing secure product development life- cycle requirements?
Answer: D
Explanation:
ISA/IEC 62443-4-1 provides a framework for secure product development lifecycle (SDL). One of its primary goals is to ensure that security practices are integrated consistently and systematically throughout the product's development process.
"The objective of this part is to define a secure development lifecycle process that results in a consistent and repeatable approach to building secure products."
- ISA/IEC 62443-4-1:2018, Clause 1 - Scope
While all listed items may contribute to security, the core intent of Part 4-1 is to ensure an aligned, structured development process.
References:
ISA/IEC 62443-4-1:2018 - Clause 1
Clause 4 - SDL Practices and Process Requirements
NEW QUESTION # 29
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